The word(s) "serve" appears 75 time(s) in 73 verse(s) in Quran in Abdullah Yusuf Ali translation.

(41) And (We also saved) Abraham: behold, he said to his people, "serve Allah and fear Him: that will be best for you- If ye understand!

(42) "For ye do worship idols besides Allah, and ye invent falsehood. The things that ye worship besides Allah have no power to give you sustenance: then seek ye sustenance from Allah, serve Him, and be grateful to Him: to Him will be your return.

(43) To the Madyan (people) (We sent) their brother Shu'aib. Then he said: "O my people! serve Allah, and fear the Last Day: nor commit evil on the earth, with intent to do mischief."

(44) O My servants who believe! truly, spacious is My Earth: therefore serve ye Me - (and Me alone)!

(45) Now no person knows what delights of the eye are kept hidden (in reserve) for them - as a reward for their (good) deeds.

(46) And those who annoy believing men and women undeservedly, bear (on themselves) a calumny and a glaring sin.

(47) If Allah were to punish men according to what they deserve. He would not leave on the back of the (earth) a single living creature: but He gives them respite for a stated Term: when their Term expires, verily Allah has in His sight all His Servants.

(48) "It would not be reasonable in me if I did not serve Him Who created me, and to Whom ye shall (all) be brought back.

(49) Except by way of Mercy from Us, and by way of (world) convenience (to serve them) for a time.

(50) Verily it is We Who have revealed the Book to thee in Truth: so serve Allah, offering Him sincere devotion.