{ Fighting is ordained for you, being something you dislike; but perhaps you dislike something that is good for you, and perhaps you like something that is bad for you; and Allah knows but you do not know } Al-baqara 216

Ibn ‘Abbas said: When Allah ordained jihad for the Muslims, this troubled them; their souls were averse to it although their hearts consented to it, and so Allah Most High was pleased to ease their souls by this verse.