هو يتحقق من إثبات الملكية والرقم التسلسلي.

In Arabic, the verb يتحقق already includes the subject he because of its form: the prefix يـ marks third person masculine singular.

So هو is not strictly necessary. It is often added for one of these reasons:

• to make the subject extra clear
• to give slight emphasis
• to contrast with someone else
• because Arabic often allows a pronoun at the start of a sentence for smooth style

So both of these can work:

• هو يتحقق من...
• يتحقق من...

The version with هو is a little more explicit: He is checking...

يتحقق من is a very common combination meaning:

• to check
• to verify
• to make sure of

The preposition من is part of the normal construction of this meaning. So it is best to learn تحقق من as a unit.

A useful comparison:

• تحقّق الشيء = the thing became true / was realized / happened
• تحقّق من الشيء = he checked / verified the thing

So in your sentence, يتحقق من إثبات الملكية والرقم التسلسلي means he is verifying those items.

يتحقق is the imperfect form of تحقّق.

More specifically:

• past tense: تحقّق
• present/imperfect: يتحقّق

It comes from the root ح-ق-ق, which is connected with ideas like truth, reality, and certainty.

The pattern here is a derived verb form, often called Form V. This form often gives meanings like:

• becoming something
• doing something to oneself
• making sure of something
• being affected by the basic idea of the root

In this sentence, the practical meaning is simply he checks / he is checking / he verifies.

It can mean either one.

The Arabic imperfect tense often covers both:

• simple present: he checks
• present continuous: he is checking

So the exact English translation depends on context.

In isolation, هو يتحقق من إثبات الملكية والرقم التسلسلي could be understood as either:

• He checks the proof of ownership and the serial number
• He is checking the proof of ownership and the serial number

Arabic usually leaves that distinction to context rather than marking it as strictly as English does.

This is an iḍāfa construction, often called a genitive or possessive construction.

It is made of:

• إثبات = proof, establishing, or verification
• الملكية = ownership

Together, إثبات الملكية means literally something like:

• proof of ownership
• establishing ownership

In context, it usually refers to a document or evidence showing who owns something.

A key grammar point: in an iḍāfa, the first noun usually does not take الـ, but the whole phrase can still be definite because the second noun is definite.

So:

• إثبات الملكية = the proof of ownership / proof of ownership

Because one preposition can govern two coordinated nouns in Arabic, just as in English.

So:

• من إثبات الملكية والرقم التسلسلي

means:

• of/from the proof of ownership and the serial number

The و joins the two things being checked, and the single من applies to both.

Arabic could repeat the preposition for extra clarity in some contexts, but it does not need to here.

Because التسلسلي is an adjective modifying الرقم.

In Arabic, adjectives normally agree with the noun they describe in:

• definiteness
• gender
• number
• case

So:

• الرقم = the number
• التسلسلي = the serial / sequential

Together:

• الرقم التسلسلي = the serial number

Because the noun is definite (الرقم), the adjective must also be definite (التسلسلي).

Compare:

• رقم تسلسلي = a serial number
• الرقم التسلسلي = the serial number

It is an adjective here.

It comes from the idea of sequence or series and describes the type of number. So الرقم التسلسلي is literally the sequential/serial number.

That is why it follows the noun and agrees with it.

So the structure is:

• الرقم = noun
• التسلسلي = adjective describing that noun

This is different from إثبات الملكية, which is an iḍāfa construction made of two nouns.

Not always. In these two words, the ل of الـ is not pronounced because the next letter is a sun letter.

So:

• الرقم is written with الـ, but pronounced roughly ar-raqam
• التسلسلي is written with الـ, but pronounced roughly at-tasalsulī

This happens because:

• ر is a sun letter
• ت is a sun letter

So the l sound of الـ assimilates to the next consonant.

Also, إثبات begins with a pronounced hamza, so it starts like ithbāt.

In fully vocalized formal Arabic, you could read the sentence as:

هوَ يتحقّقُ من إثباتِ الملكيّةِ والرقمِ التسلسليِّ

Why these endings?

• يتحققُ is the verb in the indicative, so it ends in ـُ
• after من, nouns are genitive
• so إثباتِ is genitive
• in the iḍāfa, الملكيةِ is also genitive
• الرقمِ is genitive because it is also governed by من
• التسلسليِّ matches الرقمِ, so it is genitive too

In normal unvowelled writing, these endings are usually not shown, and in everyday reading many speakers do not pronounce all of them fully unless they are reading very carefully.