Parsing the word "lawla huwa" (if it were not for him).

The Shaykh : According to the author's statement, "lawlah" means "if it were not for him," implying that he exists. Thus, "huwa" is a subject pronoun, and the predicate is omitted. However, there is a standard Arabic usage where "lawla" is a preposition. Based on that, "lawlah" is a pronoun without the letter waw, and "lawla" functions as a preposition, similar to "lawlaka" (if it were not for you) or "lawlaya" (if it were not for me), and so on. But the more common or well-known usage is the first one. Yes.