Surah Al-Qasas 28:24

فَسَقَىٰ لَهُمَا ثُمَّ تَوَلَّىٰٓ إِلَى ٱلظِّلِّ فَقَالَ رَبِّ إِنِّى لِمَآ أَنزَلْتَ إِلَىَّ مِنْ خَيْرٍ فَقِيرٌ

So he watered [their flocks] for them; then he went back to the shade and said, "My Lord, indeed I am, for whatever good You would send down to me, in need."

Translation: Saheeh International

Tafsir

So he watered their flock for them from another well nearby by lifting a rock from on top of it which only ten men could have lifted; then he retreated to the shade of an acacia tree samura because of the extreme heat of the sun and he was hungry and said ‘My Lord indeed I am in utter need of whatever good whatever …

Excerpt from Tafsir al-Jalalayn, commentary on 28:24, via Quran.com. The reader has the full commentary and 9 more tafsirs.