فَصْلٌ: الْمَنْصُوبُ بِلَا الَّتِي لِنَفْيِ الْجِنْسِ: هُوَ الْمُسْنَدُ إِلَيْهِ بَعْدَ دُخُولِهَا، يَلِيهَا نَكِرَةٌ مُضَافَةٌ.
Translation: The noun put in the accusative by lā of generic negation is the subject of predication following lā, when an indefinite noun in an iḍāfa construction comes immediately after it.
Lā of generic negation denies the presence of any member of a class, not merely one particular person. Under its conditions it governs its noun in the accusative position.
«لَا رَجُلَ فِي الدَّارِ» means “There is no man in the house.”
The author first treats two types of its noun: muḍāf and shabīh bi-l-muḍāf.