The word(s) "mercy" appears 164 time(s) in 156 verse(s) in Quran in Abdullah Yusuf Ali translation.

(51) There are (yet) others, held in suspense for the command of Allah, whether He will punish them, or turn in mercy to them: and Allah is All-Knowing, Wise.

(52) (He turned in mercy also) to the three who were left behind; (they felt guilty) to such a degree that the earth seemed constrained to them, for all its spaciousness, and their (very) souls seemed straitened to them,- and they perceived that there is no fleeing from Allah (and no refuge) but to Himself. Then He turned to them, that they might repent: for Allah is Oft-Returning, Most Merciful.

(53) When We make mankind taste of some mercy after adversity hath touched them, behold! they take to plotting against Our Signs! Say: "Swifter to plan is Allah!" Verily, Our messengers record all the plots that ye make!

(54) Whether We show thee (realised in thy life-time) some part of what We promise them,- or We take thy soul (to Our mercy) (Before that),- in any case, to Us is their return: ultimately Allah is witness, to all that they do.

(55) O mankind! there hath come to you a direction from your Lord and a healing for the (diseases) in your hearts,- and for those who believe, a guidance and a mercy.

(56) Say: "In the bounty of Allah. And in His mercy,- in that let them rejoice": that is better than the (wealth) they hoard.

(57) "And deliver us by Thy mercy from those who reject (Thee)."

(58) If We give man a taste of mercy from Ourselves, and then withdraw it from him, behold! he is in despair and (falls into) blasphemy.

(59) Can they be (like) those who accept a Clear (Sign) from their Lord, and whom a witness from Himself doth teach, as did the Book of Moses before it,- a guide and a mercy? They believe therein; but those of the Sects that reject it,- the Fire will be their promised meeting-place. Be not then in doubt thereon: for it is the truth from thy Lord: yet many among men do not believe!

(60) He said: "O my people! See ye if (it be that) I have a Clear Sign from my Lord, and that He hath sent mercy unto me from His own presence, but that the mercy hath been obscured from your sight? shall we compel you to accept it when ye are averse to it?