The word(s) "back" appears 262 time(s) in 241 verse(s) in Quran in Muhammad Habib Shakir translation.

(171) Say: Call upon those whom you assert besides Allah; they do not control the weight of an atom in the heavens or in the earth nor have they any partnership in either, nor has He among them any one to back (Him) up.

(172) Say: You have the appointment of a day from which you cannot hold back any while, nor can you bring it on.

(173) Say: The truth has come, and the falsehood shall vanish and shall not come back.

(174) That He may pay them back fully their rewards and give them more out of His grace: surely He is Forgiving, Multiplier of rewards.

(175) And were Allah to punish men for what they earn, He would not leave on the back of it any creature, but He respites them till an appointed term; so when their doom shall come, then surely Allah is Seeing with respect to His servants.

(176) And what reason have I that I should not serve Him Who brought me into existence? And to Him you shall be brought back;

(177) Therefore glory be to Him in Whose hand is the kingdom of all things, and to Him you shall be brought back.

(178) So they went away from him, turning back.

(179) Bring them back to me; so he began to slash (their) legs and necks.

(180) Say: O my servants who believe! be careful of (your duty to) your Lord; for those who do good in this world is good, and Allah's earth is spacious; only the patient will be paid back their reward in full without measure.