Supplication for one who gives food or drink

اَللّٰهُمَّ اَطْعِمْ مَنْ اَطْعَمَنِيْ وَاسْقِ مَنْ سَقَانِيْ

O Allah! Feed the one who fed me and give drink to the one who gave me drink.

1. Sahih Muslim, no. (2055), Musnad Ahmad (6/2), the wording is his.