"It is authentically reported on the authority of Abu Hurairah that the Messenger of Allah said: "Seek what benefits you, and seek help only from Allah and do not lose heart. If any adversity comes to you, do not say: "If I had only acted in such-and-such a way, it would have been such-and-such;" but instead, say: "Allah has decreed (it) and what He willed, He has done," for verily, (the word) (if) opens the way for the work of Satan." ¹

Because Islam calls mankind to that which leads to success, prosperity and betterment of society, Allah's Messenger commanded the Muslims to take part in jihad in Allah's cause; and in order that they might attain the aforementioned blessings - in this life and the Hereafter – he ordered them to accept calamities - which are all from Allah's Qadr - with equanimity, and not to become depressed or open the door to regret or blame by saying: "If only I had done such-and-such a thing, I might have avoided this outcome;" for to do so will lead to anger and despair, and these are the works of the devil. Instead he guided them to that which is better and more worthy, which is to say: "Allah has decreed (it) and what He willed He has done."

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