The word(s) "grieve" appears 36 time(s) in 36 verse(s) in Quran in Muhammad Pickthal translation.

(21) And let not their speech grieve thee (O Muhammad). Lo! power belongeth wholly to Allah. He is the Hearer, the Knower.

(22) Strain not thine eyes toward that which We cause some wedded pairs among them to enjoin, and be not grieved on their account, and lower thy wing (in tenderness) for the believers.

(23) Endure thou patiently (O Muhammad). Thine endurance is only by (the help of) Allah. grieve not for them, and be not in distress because of that which they devise.

(24) Then (one) cried unto her from below her, saying: grieve not! Thy Lord hath placed a rivulet beneath thee,

(25) The Supreme Horror will not grieve them, and the angels will welcome them, (saying): This is your Day which ye were promised;

(26) And grieve thou not for them, nor be in distress because of what they plot (against thee).

(27) And We inspired the mother of Moses, saying: Suckle him and, when thou fearest for him, then cast him into the river and fear not nor grieve. Lo! We shall bring him back unto thee and shall make him (one) of Our messengers.

(28) So We restored him to his mother that she might be comforted and not grieve, and that she might know that the promise of Allah is true. But most of them know not.

(29) And when Our messengers came unto Lot, he was troubled upon their account, for he could not protect them; but they said: Fear not, nor grieve! Lo! we are to deliver thee and thy household, (all) save thy wife, who is of those who stay behind.

(30) Thou canst defer whom thou wilt of them and receive unto thee whom thou wilt, and whomsoever thou desirest of those whom thou hast set aside (temporarily), it is no sin for thee (to receive her again); that is better; that they may be comforted and not grieve, and may all be pleased with what thou givest them. Allah knoweth what is in your hearts (O men), and Allah is ever Forgiving, Clement.