Lie against Allah
The Prophet (sal Allahu alaihi wa sallam) said: “Allah said, ‘The son of Adam tells a lie against Me, though he has no right to do so. As for his telling a lie against Me, it is that he claims that I cannot recreate him as I created him before; and as for his abusing Me, it is his statement that I have a son. No! Glorified be Me! I am far from taking a wife or a son.’” [Sahih Bukhari]
The univers...e, of even whose extent we are not aware, is just one of the many things that Allah (subhana wa ta’al) has created. To think that such a minuscule part of the universe, a man, cannot be recreated by the One Who created him in the first place is illogical. As it is, doing something for the second time is always easier than doing it for the first time.
Attributing a wife or son to Allah (subhana wa ta’ala) shows total incomprehension of who Allah (subhana wa ta’ala) is; His total independence of everything, His Uniqueness and His Oneness.