The Coalition - 33:18
"Allah knows those among you who hinder and those who say to their brothers, "Come to us". They seldom join the defense."
Related:
The Repentance/9:56
They swear by Allah that they are of you, but they are not of you, but they are a people who create discord.
The Repentance/9:57
Indeed, if they had found a refuge or a cave or a hole to enter, they would have turned to it in panic.
The Banishment/59:14
They cannot come together to fight you except in well-protected cities or behind walls. Their strife between them is fierce. You think them to be united, but their hearts are scattered. For they are a people who do not use their minds.