72. To one who intends to give food or drink
الدعاء إذا أراد الطعام أو الشراب
اللّهُـمَّ أَطْعِمْ مَن أَطْعَمَني، وَاسْقِ مَن سقاني
Allāhumma aṭ`im man aṭ`amanī wasqi man saqānī.
O Allah, feed the one who has fed me, and give drink to the one who has given me drink.
Source: Muslim 3/126.