يبلغ الزبون عن السرقة.

A fully vocalized version is:

يُبلِغُ الزَّبونُ عَنِ السَّرِقَةِ

A careful pronunciation would be approximately:

yubliġu az-zabūnu ʿani s-sariqati

Two useful pronunciation notes:

• In الزبون and السرقة, the الـ article is written, but its l sound assimilates to the next consonant because ز and س are sun letters.
  • الزبون is pronounced az-zabūn
  • السرقة is pronounced as-sariqa
• In slower, fully inflected MSA, you may hear final case vowels such as -u and -i. In less formal speech, these are often not pronounced.

Because unvocalized Arabic can be ambiguous.

The spelling يبلغ can represent different verbs depending on the vowels:

• يَبلُغُ from بلغ = to reach
• يُبلِغُ from أبلغ = to inform / report

In this sentence, the presence of عن strongly points to the meaning to report:

• يُبلِغُ عن السرقة = he reports the theft / reports about the theft

So the context tells you which verb is meant.

Because this verb is commonly used with عن when talking about reporting something.

So Arabic says:

• أبلغ عن شيء
• يُبلِغ عن شيء

This literally works like report about / report on something, though in natural English we usually just say report something.

So:

• يبلغ الزبون عن السرقة = The customer reports the theft

You would normally not drop عن here if you want this meaning.

Yes, you could.

In MSA, both word orders are possible:

• يُبلِغُ الزبونُ عن السرقةِ = verb first
• الزبونُ يُبلِغُ عن السرقةِ = subject first

The version with the verb first is a very common neutral MSA pattern. It is often called VSO: verb–subject–object/complement.

The subject-first version is also correct and may sound slightly more topical or emphatic, depending on context.

Because both nouns are definite:

• الزبون = the customer
• السرقة = the theft

If you remove الـ, the meaning becomes indefinite:

• زبون = a customer
• سرقة = a theft

So:

• يبلغ الزبون عن السرقة = The customer reports the theft
• يبلغ زبونٌ عن سرقةٍ = A customer reports a theft

In fully inflected MSA:

• يُبلِغُ ends in -u because it is in the indicative mood
• الزبونُ ends in -u because it is the subject, so it is nominative
• السرقةِ ends in -i because it comes after the preposition عن, so it is genitive

So the full formal reading is:

يُبلِغُ الزبونُ عنِ السرقةِ

In everyday spoken Arabic, these case endings are usually dropped, but in formal MSA they matter.

Yes. السرقة is grammatically feminine, and the ة at the end is a strong clue.

However, it does not affect the verb in this sentence, because السرقة is not the subject. The subject is الزبون.

So the verb agrees with الزبون, not with السرقة.

If the subject were feminine, for example الزبونة = the female customer, then the verb would change:

• تُبلِغُ الزبونةُ عن السرقةِ = The female customer reports the theft

Yes, الزبون is grammatically masculine singular.

It usually means customer or client. In many contexts it can be used generically, but if you specifically want a female customer, you would commonly say:

• الزبونة = the female customer

So:

• يُبلِغُ الزبونُ عن السرقةِ = The male customer / the customer reports the theft
• تُبلِغُ الزبونةُ عن السرقةِ = The female customer reports the theft

It is the imperfect form, which often covers several ideas in English, depending on context:

• reports
• is reporting
• does report
• sometimes even a near-future meaning

So this sentence could mean:

• The customer reports the theft
• The customer is reporting the theft

Arabic does not have a separate built-in -ing form like English. Context usually tells you which reading is intended.

If you want to make right now clearer, you can add a word such as:

• الآن = now

Example:

• يبلغ الزبون عن السرقة الآن = The customer is reporting the theft now

A few useful variations are:

• أبلغ الزبونُ عن السرقةِ = The customer reported the theft
• لا يُبلِغُ الزبونُ عن السرقةِ = The customer does not report / is not reporting the theft
• لم يُبلِغْ الزبونُ عن السرقةِ = The customer did not report the theft

So if you learn the sentence in one form, it is useful to connect it to the same pattern in past and negative forms.