A Question and Its Answer.

The Shaykh : One of the students asked me yesterday, saying: Why did the author say: "The words resembling *laysa*," or say: "The employment of *laysa* was employed for *ma*," and not say: "The employment of *kana*," even though *kana* is the original?
The answer to this is that we say: These words resemble *laysa* in negation, unlike *kana*, for *kana* is for affirmation. Therefore, he said "the words resembling *laysa*" to indicate that these words were attached to *laysa* because they share with it in negation.