الثَّالِثُ: مَا أُضْمِرَ عَامِلُهُ عَلَى شَرِيطَةِ التَّفْسِيرِ، وَهُوَ كُلُّ اسْمٍ بَعْدَهُ فِعْلٌ أَوْ شِبْهُهُ، يَشْتَغِلُ ذَلِكَ الْفِعْلُ عَنْ ذَلِكَ الِاسْمِ بِضَمِيرِهِ أَوْ مُتَعَلَّقِهِ.
Translation: The third case is an initial noun followed by a verb (or similar governor) occupied with a pronoun or something associated with that noun.
In ishtighāl, the visible later verb is occupied by a pronoun referring back to the fronted noun.