The word(s) "mutual" appears 28 time(s) in 28 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) Speak to my servants who have believed, that they may establish regular prayers, and spend (in charity) out of the sustenance we have given them, secretly and openly, before the coming of a Day in which there will be neither mutual bargaining nor befriending.

(12) It is Allah Who made out of the things He created, some things to give you shade; of the hills He made some for your shelter; He made you garments to protect you from heat, and coats of mail to protect you from your (mutual) violence. Thus does He complete His favours on you, that ye may bow to His Will (in Islam).

(13) "Lead to destruction those whom thou canst among them, with thy (seductive) voice; make assaults on them with thy cavalry and thy infantry; mutually share with them wealth and children; and make promises to them." But Satan promises them nothing but deceit.

(14) (Abundant) was the produce this man had: he said to his companion, in the course of a mutual argument: "more wealth have I than you, and more honour and power in (my following of) men."

(15) The Great Terror will bring them no grief: but the angels will meet them (with mutual greetings): "This is your Day,- (the Day) that ye were promised."

(16) "They will say there in their mutual bickerings:

(17) They said: "Swear a mutual oath by Allah that we shall make a secret night attack on him and his people, and that we shall then say to his heir (when he seeks vengeance): 'We were not present at the slaughter of his people, and we are positively telling the truth.'"

(18) And he said: "For you, ye have taken (for worship) idols besides Allah, out of mutual love and regard between yourselves in this life; but on the Day of Judgment ye shall disown each other and curse each other: and your abode will be the Fire, and ye shall have none to help."

(19) Truly that is just and fitting,- the mutual recriminations of the People of the Fire!

(20) Raised high above ranks (or degrees), (He is) the Lord of the Throne (of Authority): by His Command doth He send the Spirit (of inspiration) to any of His servants he pleases, that it may warn (men) of the Day of mutual Meeting,-