وَمِنْهَا: «قَطُّ» لِلْمَاضِي الْمَنْفِيِّ، نَحْوُ: «مَا رَأَيْتُهُ قَطُّ».
Translation: Qaṭṭ is used with a negated past: “I have never seen him.”
The source uses qaṭṭ with negative past statements: “never (up to now / in the past).” Its fixed final ḍamma is not automatically a nominative case ending.
Book example: مَا رَأَيْتُهُ قَطُّ.
I have never seen him.
Mā: negator; raʾaytu: past verb + subject suffix; -hu: object; qaṭṭu: indeclinable time adverb in an accusative adverbial position.