Supplication said to one offering a drink or to one who intended to do that

(175)   

اللّهُـمَّ أَطْعِمْ مَن أَطْعَمَني، وَاسْقِ مَن سقاني.

Allahumma atAAim man atAAamanee wasqi man saqanee.

‘O Allah, feed him who fed me, and provide with drink him who provided me with drink.’