Hausa sa can mean “put” with a nominal object, but it also heads a productive indirect causative: one situation causes another situation to occur. In Malaman sun sa yaran sun fita “The teachers made the children go out,” the teachers initiate the causal chain and the children carry out the leaving. Hausa treats the effect as a clause with its own subject–TAM marker; it does not copy English make + bare infinitive.
All unlabelled examples are (neutral Nigerian Standard Hausa). Causer, causee, matrix clause, lower clause, periphrastic, and implicational strength are (academic) labels. Ordinary boko keeps ɓ, ɗ, ƙ and apostrophes but does not show tone or vowel length, so some distinct TAM forms look alike on the page.
Two events, two clause domains
The neutral past-time pattern can be represented as follows:
| Domain | Hausa | Role |
|---|---|---|
| matrix clause | Malaman sun sa | the teachers caused something |
| lower clause | yaran sun fita | the children went out |
Malaman sun sa yaran sun fita daga aji.
The teachers made the children leave the classroom.
Ruwan sama ya sa hanyar ta lalace.
The rain caused the road to deteriorate.
Labarin ya sa Amina ta yi murmushi.
The news made Amina smile.
The lower subject can be a deliberate actor, as with yaran, or an affected entity, as with hanyar. In either case, the overt noun does not replace agreement: yaran sun, hanyar ta, Amina ta. The construction therefore expands neutral S–TAM–V–O order rather than abolishing it:
causer – matrix TAM – sa – lower subject – lower TAM – lower verb.
English has only one overt finite tense in the news made Amina smile. Hausa supplies finite-looking subject–TAM material in both domains. Translating ta as a second English past-tense word misses its structural job.
TAM depends on the causal scenario
A completed past causation commonly appears with completive marking in both clauses. This strongly presents the effect as having occurred:
Nasarar ƙungiyar ta sa magoya baya sun yi murna.
The team’s victory made the supporters celebrate.
With a future, continuative, habitual, imperative, or other non-completed matrix, the lower clause normally uses the subjunctive. The effect is projected, intended, recurrent, or dependent rather than asserted as an already completed fact.
Wannan maganin zai sa ka yi barci.
This medicine will make you sleep.
Hayaniyar tana sa jariri ya farka.
The noise makes the baby wake up.
Ka sa yaran su zauna a inuwa.
Have the children sit in the shade. (to one male)
In zai sa ka yi, tana sa ... ya farka, and ka sa ... su zauna, the lower short markers ka, ya, su are subjunctive. They locate the effect relative to the causation; they are not English infinitive markers. Full TAM paradigms belong on the linked subjunctive pages.
The correspondence is strong but not mechanical. A speaker can select an ongoing or future lower viewpoint when the intended result itself is ongoing or prospective. What matters is the causal relation plus the viewpoint chosen for each subevent, not a rule that blindly copies the first marker into the second.
For the complete person series independently of causation, see The Complete Subjunctive Person Paradigm.
sa is not an auxiliary and not free serialization
Compare literal placement with causation:
Hauwa ta sa littafin a kan tebur.
Hauwa put the book on the table.
Hauwa ta sa Musa ya ajiye littafin a kan tebur.
Hauwa made Musa put the book on the table.
The first sa selects an object and location. The second selects a caused proposition whose subject is Musa. In the causative, the lower marker ya cannot be omitted. This is why the construction is better learned as clause embedding than as two bare verbs casually placed together.
Hausa also has derived verb forms that can express more direct or lexicalized causation. Those forms do not make sa redundant. A sa construction productively portrays a causal chain with a distinct initiating situation and result situation; it can accommodate complex lower clauses and nonhuman causes.
Negation and questions show which domain has scope
Negating the matrix denies that the causer brought about the effect:
Malamin bai sa yaran su fita ba.
The teacher did not make the children leave.
This does not assert that the children stayed; they could have left for another reason. By contrast, a negative subjunctive in the lower clause makes non-occurrence the intended result:
Malamin zai sa kada yaran su fita kafin ƙararrawa.
The teacher will ensure that the children do not leave before the bell.
Kada yaran su fita takes no closing ba. This sa + kada pattern is marginal for some speakers; hana or another lexical avoidance or cessation predicate is often the safer natural choice. The two negatives nevertheless have different scope and different shapes.
A polar question keeps the causal clause in its ordinary order:
Wannan ne zai sa su canja shawara?
Is this what will make them change their decision?
A content question can ask for the cause:
Me zai sa su canja shawara?
What would make them change their decision?
No English-style do is inserted, and the lower subject marker su remains. The familiar expression me ya sa ...? “why?” comes historically and transparently from “what caused ...?”, but its following clause still needs normal Hausa subject–TAM structure.
Focused causation is licensed, not scrambled
Begin with a neutral completed report:
Malaman sun sa yaran sun koma aji.
The teachers made the children return to class. (neutral)
If the discourse contrasts teachers with parents, the causer can be focused:
Malaman ne suka sa yaran sun koma aji, ba iyayensu ba.
It was the teachers who made the children return to class, not their parents. (focused causer)
Matrix plural sun changes to relative suka after focus. Relative marking is licensed locally in the matrix clause; the embedded completed clause remains absolute yaran sun koma. Focus does not propagate relative completive marking into the lower clause.
A topic uses a different strategy. It is resumed in the clause rather than leaving the same focus dependency:
Yaran kuwa, malaman sun sa su sun koma aji.
As for the children, the teachers made them return to class.
Here the first su is a matrix object resuming the topical children, while the second sun is the subject–TAM marker of the lower completed clause. This doubled-looking sequence is structurally informative: the children participate in two related roles across two domains.
A discourse reason for the marked order
Suppose a head teacher is investigating why pupils returned after break:
—Iyayen yaran ne suka ce su koma aji? —A’a. Malaman ne suka sa yaran sun koma aji; iyayensu ba sa makarantar ma.
—Was it the children’s parents who told them to return to class? —No. It was the teachers who made the children return to class; their parents were not even at the school.
The question places parents into the contrast set. The reply therefore focuses malaman rather than using the neutral malaman sun sa.... The marked order solves a real discourse problem: identifying and correcting the causer.
Common Mistakes
1. Copying English make plus a bare verb
❌ Malamin ya sa yaran fita.
Incorrect—fita is missing the lower clause’s subject–TAM marker.
✅ Malamin ya sa yaran sun fita.
The teacher made the children leave.
2. Treating the overt lower noun as its agreement marker
❌ Ruwan sama zai sa hanyar lalace.
Incorrect—the overt noun hanyar does not replace feminine singular subjunctive ta.
✅ Ruwan sama zai sa hanyar ta lalace.
The rain will cause the road to deteriorate.
3. Using an independent future as the ordinary projected effect
❌ Wannan zai sa Musa zai tafi.
Incorrect for the ordinary meaning ‘This will make Musa leave’; the lower event is selected as a dependent effect.
✅ Wannan zai sa Musa ya tafi.
This will make Musa leave.
4. Fronting the causer but retaining plain plural completive marking
❌ Malaman ne sun sa yaran sun koma aji.
Incorrect canonical focus—the focused subject requires relative completive suka.
✅ Malaman ne suka sa yaran sun koma aji.
It was the teachers who made the children return to class.
5. Adding final ba to a negative subjunctive effect
❌ Ya sa kada su fita ba.
Incorrect—kada ... subjunctive does not take a closing ba.
✅ Ya sa kada su fita.
He ensured that they did not leave.
Key Takeaways
- Causative sa combines a causing clause with a caused clause; both have their own subject–TAM structure.
- Completed past causation commonly has completive marking in both domains; non-completed causation normally selects a subjunctive effect.
- The lower subject may be an intentional actor or an affected entity, but an overt noun never replaces its TAM marker.
- Matrix negation denies the causal relation; lower kada makes a negative result the target.
- Focus and topic orders require their own relative-TAM or resumptive machinery. They are not free alternatives to the neutral clause frame.
Related Topics
- Repeated Subject–TAM Marking across VerbsB1 — Repeat the appropriate Hausa subject–TAM marker before each finite predicate, even when one overt subject controls the whole sequence.
- Control and Subject ReferenceB1 — Track who performs each event in Hausa complement clauses by keeping a subject marker before every finite predicate.
- bari Permissive ConstructionsB1 — Use lexical bari for permission and imperative bari for proposals, while marking the permitted event with its own subject.
- Subjunctive: Complete Person ParadigmA2 — Learn all nine Hausa subjunctive subject markers and use them in requests, purposes, obligations, proposals, and negative clauses.
- Subject FocusB1 — Identify or correct the subject of a Hausa clause through focus particles, relative TAM, and discourse-appropriate subject marking.