The word(s) "fairest" appears 3 time(s) in 3 verse(s) in Quran in Muhammad Pickthal translation.

(1) And their Lord hath heard them (and He saith): Lo! I suffer not the work of any worker, male or female, to be lost. Ye proceed one from another. So those who fled and were driven forth from their homes and suffered damage for My cause, and fought and were slain, verily I shall remit their evil deeds from them and verily I shall bring them into Gardens underneath which rivers flow - A reward from Allah. And with Allah is the fairest of rewards.

(2) Allah's are the fairest names. Invoke Him by them. And leave the company of those who blaspheme His names. They will be requited what they do.

(3) Allah hath (now) revealed the fairest of statements, a Scripture consistent, (wherein promises of reward are) paired (with threats of punishment), whereat doth creep the flesh of those who fear their Lord, so that their flesh and their hearts soften to Allah's reminder. Such is Allah's guidance, wherewith He guideth whom He will. And him whom Allah sendeth astray, for him there is no guide.