هو يعطي الجزيل
He gives generously.
“هو يعطي الجزيل” introduces the person first and then predicates abundant giving of him. The construction can make the assertion feel more established: taqwiyat al-ḥukm (تقوية الحكم), strengthening the judgment.
It does not necessarily say that nobody else gives. Restriction (qaṣr) concerns excluding alternatives, whereas strengthening reinforces the proposition about its subject.
The antecedent discourse and the speaker's communicative purpose determine whether the initial pronoun is contrastive, emphatic, or simply the normal subject expression.