The word(s) "mutual" appears 21 time(s) in 21 verse(s) in Quran in Mohsin Khan translation.

(11) Say (O Muhammad صلى الله عليه و سلم) to 'Ibadi (My slaves) who have believed, that they should perform As-Salat (Iqamat-as-Salat ), and spend in charity out of the sustenance We have given them, secretly and openly, before the coming of a Day on which there will be neither mutual bargaining nor befriending.

(12) And Allah has made for you out of that which He has created shades, and has made for you places of refuge in the mountains, and has made for you garments to protect you from the heat (and cold), and coats of mail to protect you from your (mutual) violence. Thus does He perfect His Favour unto you, that you may submit yourselves to His Will (in Islam).

(13) And he had property (or fruit) and he said to his companion, in the course of mutual talk: "I am more than you in wealth and stronger in respect of men." (Tafsir Al-Qurtubi).

(14) Then they will turn to one another, mutually questioning.

(15) Verily, that is the very truth - the mutual dispute of the people of the Fire!

(16) (He is Allah) Owner of High Ranks and Degrees, the Owner of the Throne. He sends the revelation by His Command to any of His slaves He wills, that he (the person who receives revelation) may warn (men) of the Day of mutual Meeting (i.e. the Day of Resurrection).

(17) "And, O my people! Verily, I fear for you the Day when there will be mutual calling (between the people of Hell and of Paradise)."

(18) And those who answer the Call of their Lord [i.e. to believe that He is the only One Lord (Allah), and to worship none but Him Alone], and perform As-Salat (Iqamat-as-Salat), and who (conduct) their affairs by mutual consultation, and who spend of what We have bestowed on them.

(19) Know that the life of this world is only play and amusement, pomp and mutual boasting among you, and rivalry in respect of wealth and children. (It is) as the likeness of vegetation after rain, thereof the growth is pleasing to the tiller; afterwards it dries up and you see it turning yellow; then it becomes straw. But in the Hereafter (there is) a severe torment (for the disbelievers - evil-doers), and (there is) Forgiveness from Allah and (His) Good Pleasure (for the believers - good-doers). And the life of this world is only a deceiving enjoyment.

(20) (And remember) the Day when He will gather you (all) on the Day of Gathering, - that will be the Day of mutual loss and gain (i.e. loss for the disbelievers as they will enter the Hell-fire and gain for the believers as they will enter Paradise). And whosoever believes in Allah and performs righteous good deeds, He will expiate from him his sins, and will admit him to Gardens under which rivers flow (Paradise) to dwell therein forever; that will be the great success.