To one who intends to give food or drink1 du'a

O Allah, feed the one who has fed me, and give drink to the one who has given me drink.

Reference:Muslim 3/126.Hisnul Muslim 183

اللّهُـمَّ أَطْعِمْ مَن أَطْعَمَني وَاسْقِ مَن سقاني

Transliteration

Allāhumma aṭ`im man aṭ`amanīwasqi man saqānī.

Translation

O Allah, feed the one who has fed me, and give drink to the one who has given me drink.