(Yaaseen) 36 : 73
وَلَهُمْ فِيهَا مَنَافِعُ وَمَشَارِبُ ۖ أَفَلَا يَشْكُرُونَ

And they have different benefits and drinks from them, so aren’t they thankful? 

By asking “Aren’t they thankful?” the Lord is asking those who read these verses: Will you not acknowledge Him as the only Deity of all creatures, as explained in verse 36:35? See explanation 2:62, 152; 16:66.