Allah also advised the prophets to be grateful. For example, in the Qur’an He tells the Prophet Moses(pbuh):

He [Allah] said, 'Moses, I have chosen you over allmankind for My
Messageand My Word. Take whatI have given you and be among the
thankful.' (Surat al-A'raf, 144)
Many verses of the Qur'an reveal how the Messengers were people who
gave much thanks to Allah.
Verse 15 of Surat al-Ahqaf shows the importance of giving thanks and
asking to be grateful in the face of Allah's blessings in the prayer a
believer makes when he reaches the age of 40:
We have instructed man to be good to his parents. His mother borehim
with difficulty and with difficulty gave birthto him; and his bearing
and weaning take thirty months. Then when he achieves his full
strengthand reaches forty, he says, 'My Lord, keep me thankful for the
blessing You bestowed on me and on my parents, and keep me acting
rightly, pleasing You. And make my descendants pious. I have sought
forgiveness of You and I am truly oneof the Muslims.' (Surat al-Ahqaf,
15)

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