The word(s) "thankful" appears 9 time(s) in 9 verse(s) in Quran in Mohsin Khan translation.

(1) O you who believe! Fear Allah (by doing all that He has ordered and by abstaining from all that He has forbidden) as He should be feared. [Obey Him, be thankful to Him, and remember Him always], and die not except in a state of Islam [as Muslims (with complete submission to Allah)].

(2) O you who believe! When you intend to offer As-Salat (the prayer), wash your faces and your hands (forearms) up to the elbows, rub (by passing wet hands over) your heads, and (wash) your feet up to ankles . If you are in a state of Janaba (i.e. after a sexual discharge), purify yourselves (bathe your whole body). But if you are ill or on a journey, or any of you comes after answering the call of nature, or you have been in contact with women (i.e. sexual intercourse), and you find no water, then perform Tayammum with clean earth and rub therewith your faces and hands. Allah does not want to place you in difficulty, but He wants to purify you, and to complete His Favour to you that you may be thankful.

(3) "Then I will come to them from before them and behind them, from their right and from their left, and You will not find most of them as thankful ones (i.e. they will not be dutiful to You)."

(4) And indeed We sent Musa (Moses) with Our Ayat (signs, proofs, and evidence) (saying): "Bring out your people from darkness into light, and remind them of the Annals of Allah. Truly, therein are Ayat (evidence, proofs and signs) for every patient, thankful (person)."

(5) (He was) thankful for His (Allah's) Favours. He (Allah) chose him (as an intimate friend) and guided him to a Straight Path (Islamic Monotheism - neither Judaism nor Christianity ).

(6) And among His Signs is this, that He sends the winds as glad tidings, giving you a taste of His Mercy (i.e. rain), and that the ships may sail at His Command, and that you may seek of His Bounty, in order that you may be thankful.

(7) And if We send a wind [which would spoil the green growth (tilth) brought up by the previous rain], and they see (their tilth) turn yellow - behold, they then (after their being glad,) would become unthankful (to their Lord Allah as) disbelievers. [Tafsir At-Tabari]

(8) And indeed We bestowed upon Luqman Al-Hikmah (wisdom and religious understanding) saying: "Give thanks to Allah." And whoever gives thanks, he gives thanks for (the good of) his ownself. And whoever is unthankful, then verily, Allah is All-Rich (Free of all needs), Worthy of all praise.

(9) Allah, it is He Who has subjected to you the sea, that ships may sail through it by His Command, and that you may seek of His Bounty, and that you may be thankful.