Abu Muhammad al -Urabi said: I contemplated what Abu Muhammad Yusuf bin Al -Hassan bin Abdullah Al -Serafi explained from the verses of Sibawayh, and I found it in it like what Jar Bin Dirar, the brother of Al -Shammakh, said: I spent things and then left ... Among the verses of that book are the tip of the iceberg, and the few in which it was interpreted by a lot of imbalance and apparent corruption.