The word(s) "slave" appears 102 time(s) in 97 verse(s) in Quran in Muhammad Pickthal translation.

(51) And We verily gave knowledge unto David and Solomon, and they said: Praise be to Allah, Who hath preferred us above many of His believing slaves!

(52) And (Solomon) smiled, laughing at her speech, and said: My Lord, arouse me to be thankful for Thy favour wherewith Thou hast favoured me and my parents, and to do good that shall be pleasing unto Thee, and include me in (the number of) Thy righteous slaves.

(53) Say (O Muhammad): Praise be to Allah, and peace be on His slaves whom He hath chosen! Is Allah best, or (all) that ye ascribe as partners (unto Him)?

(54) And morning found those who had coveted his place but yesterday crying: Ah, welladay! Allah enlargeth the provision for whom He will of His slaves and straiteneth it (for whom He will). If Allah had not been gracious unto us He would have caused it to swallow us (also). Ah, welladay! the disbelievers never prosper.

(55) It is no sin for them (thy wives) to converse freely) with their fathers, or their sons, or their brothers, or their brothers' sons, or the sons of their sisters or of their own women, or their slaves. O women! Keep your duty to Allah. Lo! Allah is ever Witness over all things.

(56) Have they not observed what is before them and what is behind them of the sky and the earth? If We will, We can make the earth swallow them, or cause obliteration from the sky to fall on them. Lo! herein surely is a portent for every slave who turneth (to Allah) repentant.

(57) As for that which We inspire in thee of the Scripture, it is the Truth confirming that which was (revealed) before it. Lo! Allah is indeed Observer, Seer of His slaves.

(58) If Allah took mankind to task by that which they deserve, He would not leave a living creature on the surface of the earth; but He reprieveth them unto an appointed term, and when their term cometh - then verily (they will know that) Allah is ever Seer of His slaves.

(59) Save single-minded slaves of Allah;

(60) Save single-minded slaves of Allah.