The word(s) "if" appears 1620 time(s) in 1267 verse(s) in Quran in Abdullah Yusuf Ali translation.

(571) "For those who believe and work righteousness, is (every) blessedness, and a beautiful place of (final) return."

(572) if there were a Qur'an with which mountains were moved, or the earth were cloven asunder, or the dead were made to speak, (this would be the one!) But, truly, the command is with Allah in all things! Do not the Believers know, that, had Allah (so) willed, He could have guided all mankind (to the right)? But the Unbelievers,- never will disaster cease to seize them for their (ill) deeds, or to settle close to their homes, until the promise of Allah come to pass, for, verily, Allah will not fail in His promise.

(573) For them is a penalty in the life of this world, but harder, truly, is the penalty of the Hereafter: and defender have they none against Allah.

(574) Whether We shall show thee (within thy life-time) part of what we promised them or take to ourselves thy soul (before it is all accomplished),- thy duty is to make (the Message) reach them: it is our part to call them to account.

(575) See they not that We gradually reduce the land (in their control) from its outlying borders? (Where) Allah commands, there is none to put back His Command: and He is swift in calling to account.

(576) Those who love the life of this world more than the Hereafter, who hinder (men) from the Path of Allah and seek therein something crooked: they are astray by a long distance.

(577) And remember! your Lord caused to be declared (publicly): "if ye are grateful, I will add more (favours) unto you; But if ye show ingratitude, truly My punishment is terrible indeed."

(578) And Moses said: "if ye show ingratitude, ye and all on earth together, yet is Allah free of all wants, worthy of all praise.

(579) Seest thou not that Allah created the heavens and the earth in Truth? if He so will, He can remove you and put (in your place) a new creation?

(580) They will all be marshalled before Allah together: then will the weak say to those who were arrogant, "For us, we but followed you; can ye then avail us to all against the wrath of Allah?" They will reply, "if we had received the Guidance of Allah, we should have given it to you: to us it makes no difference (now) whether we rage, or bear (these torments) with patience: for ourselves there is no way of escape."