The word(s) "thankful" appears 22 time(s) in 22 verse(s) in Quran in Muhammad Pickthal translation.

(1) The month of Ramadan in which was revealed the Qur'an, a guidance for mankind, and clear proofs of the guidance, and the Criterion (of right and wrong). And whosoever of you is present, let him fast the month, and whosoever of you is sick or on a journey, (let him fast the same) number of other days. Allah desireth for you ease; He desireth not hardship for you; and (He desireth) that ye should complete the period, and that ye should magnify Allah for having guided you, and that peradventure ye may be thankful.

(2) Allah had already given you the victory at Badr, when ye were contemptible. So observe your duty to Allah in order that ye may be thankful.

(3) Muhammad is but a messenger, messengers (the like of whom) have passed away before him. Will it be that, when he dieth or is slain, ye will turn back on your heels? He who turneth back on his heels doth no hurt to Allah, and Allah will reward the thankful.

(4) No soul can ever die except by Allah's leave and at a term appointed. Whoso desireth the reward of the world, We bestow on him thereof; and whoso desireth the reward of the Hereafter, We bestow on him thereof. We shall reward the thankful.

(5) What concern hath Allah for your punishment if ye are thankful (for His mercies) and believe (in Him)? Allah was ever Responsive, Aware.

(6) Say: Who delivereth you from the darkness of the land and the sea? Ye call upon Him humbly and in secret, (saying): If we are delivered from this (fear) we truly will be of the thankful.

(7) He said: O Moses! I have preferred thee above mankind by My messages and by My speaking (unto thee). So hold that which I have given thee, and be among the thankful.

(8) He it is Who did create you from a single soul, and therefrom did make his mate that he might take rest in her. And when he covered her she bore a light burden, and she passed (unnoticed) with it, but when it became heavy they cried unto Allah, their Lord, saying: If thou givest unto us aright we shall be of the thankful.

(9) And remember, when ye were few and reckoned feeble in the land, and were in fear lest men should extirpate you, how He gave you refuge, and strengthened you with His help, and made provision of good things for you, that haply ye might be thankful.

(10) He it is Who maketh you to go on the land and the sea till, when ye are in the ships and they sail with them with a fair breeze and they are glad therein, a storm-wind reacheth them and the wave cometh unto them from every side and they deem that they are overwhelmed therein; (then) they cry unto Allah, making their faith pure for Him only: If Thou deliver us from this, we truly will be of the thankful.