Dua for A Person Supplying Drinking Water

«اللهُمَّ أَطْعِمْ مَنْ أَطْعَمَنِي، وَأَسْقِ مَنْ أَسْقَانِي»

Allahumma Ata’im man at’amani, wa asqe man asqani.

Translation:

O Allah, feed him who fed me and give drink to him who provided me drink. (Muslim)

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