Abdullah b. 'Amr b. al-'As reported:
I heard Allah's Rasul (saw) saying: Allah ordained the measures (fate) of the creation fifty thousand years before He created the heavens and the earth.
Abu Huraira reported Allah's Rasul (saw) as saying:
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 what He had ordained to do, for your" if" opens the (gate) for the Satan.
Asim bin 'Ubaidullah said:
I heard Salim bin 'Abdullah narrating a Hadith from his father who said: "'Umar said : "O Rasul of Allah! Do you see what we do as a new matter or as a matter already concluded?” He (saw) said: “ O Ibn Al-Khattab! It is a matter already concluded. For everyone is suited for that for which he is created. As for one who is among the fortunate, then he works for happiness, and as for the one who is among the unfortunate, then he works for his misery.”
Salman (ra) narrated that the Rasul of Allah (saw) said:
"Nothing turns back the Decree except supplication, and nothing increases the life-span except righteousness."
Abu Hizam (ra) narrated:
A man came and asked the Rasul of Allah (saw): Do the readings we do, the medicine we take and the diets we do have any effect in healing the sick despite what Allah has preordained for them?
He (saw) said: They are also a part of the fate of Allah. The son of Adam comes to life with ninety-nine chances of death. If he can overcome them all he will eventually become old and die of old age.
Ali (ra) narrated that the Rasul of Allah (saw) said:
A servant of Allah shall not have true faith until he has faith in four things: The word of testimony (Lailaha illa Allah), that I am the Rasul of Allah whom He sent with the Truth, death and resurrection after death, and in fate (Al-Qadar).
Jabir bin 'Abdullah narrated that the Rasul of Allah (saw) said:
“A servant (of Allah) shall not have faith until he has faith in Al-Qadar, whether good or bad, such that he knows that what struck him would not have missed him, and that what missed him would not have struck him."
Abdullah bin Amr narrated:
"The Rasul of Allah (saw) came out to us with two books in his hand. And he said: 'Do you know what these two books are?' We said: 'No, O Rasul of Allah! Unless you inform us.' He said about the one in his right hand: 'This is a book from the Rabb of the worlds, in it are the names of the people of Paradise, and the names of their fathers and their tribes. Then there is a summary at the end of them, there being no addition to them nor deduction from them forever.' Then he said about the one in his left hand: 'This is a book from the Rabb of the worlds, in it are the names of the people of Fire, and the name of their fathers and their tribes. Then there is a summary at the end of them, there being no addition to them nor deduction from them forever.' The companions said: 'So why work O Rasul of Allah! Since the matter is already decided and over?' He said: 'Seek to do what is right and draw nearer, for indeed the inhabitants of Paradise, shall have their work sealed off with the deeds of the people of Paradise. And indeed the inhabitant of Fire, shall have their work sealed off with the deeds of the people of Fire.' Then the Rasul of Allah motioned with his hands, casting them down and said: 'Your Rabb has finished with the servants, a group in Paradise, and a group in the Blazing Fire.'”