Where does “یہ” come from?

یہ (Urdu) comes from Old Hindi यहु, from Sauraseni Apabhramsa एहु, from Sauraseni Prakrit ???, from Sanskrit एष, from Sanskrit इयत्तक, from Sanskrit -तक, from Sanskrit तद्, from Proto-Indo-Iranian sá — this; that.

یہ (Urdu): this; he; she; it; they proximal third person personal pronoun