A---Allah the Almighty says: {And the Command of Allah is a decree determined}. (Al-Ahzab, 38)

Allah the Almighty says: {That Allah might accomplish a matter already ordained (in His Knowledge)}. (Al-Anfal, 42-44)

Allah the Almighty says: {And Allah's Command must be fulfilled}.

(Al-Ahzab, 37)

Allah the Almighty says: {No calamity befalls, but by the Leave [i.e.

Decision and Qadar (Divine Pre-ordainments)] of Allah, and whosoever believes in Allah, He guides his heart [to the true Faith with certainty, i.e. what has befallen him was already written for him by Allah from the Qadar (Divine Pre-ordainments)]. And Allah is the All-Knower of everything}. (At- Taghabun, 11)

Allah the Almighty says:{And what you suffered (of the disaster)

on the day (of the battle of Uhud when) the two armies met, was by the leave of Allah}. (Al' Imran, 166)

Allah the Almighty says: {Who when afflicted with calamity, say:

"Truly! To Allah we belong and truly, to Him we shall return." They are those on whom are the Salawat (i.e. who are blessed and will be forgiven) from their Lord, and (they are those who) receive His Mercy, and it is they who are the guided ones}. (AlBaqarah, 156, 157)

It was mentioned earlier in the Hadith of Gabriel, "And you affirm your faith in the Divine Decree about good and evil.” (Bukhari and Muslim)

He (Peace be upon him) says: "A strong believer is better and is more lovable to Allah than a weak believer, and there is good in everyone, (but) cherish that which gives you benefit (in the Hereafter) and seek help from Allah and do not lose heart, and if anything (in the form of trouble) comes to you, don't say: If I had not done that, it would not have happened so and so, but say: Allah did that what He had ordained to do and your "if" opens the (gate)for the Satan.” (Sahih Muslim)

Tawus (May Allah be pleased with him) reported: I found some companions of Allah's Messenger (Peace be upon him) as saying:

Everything is by measure. And he further said: I heard `Abdullah Ibn 'Umar as saying: There is a measure for everything, even for incapacity and capability.” (Sahih Muslim)