The dua (supplication) for drinking milk is a short prayer that Muslims recite before drinking milk. It is a way of showing gratitude to Allah for providing us with the sustenance and nourishment that milk provides. This Dua is usually said in Arabic, and young children are often taught it to teach them to be thankful for all the good things Allah has given them.
Suggestion: Dua e Hajat
Read Doodh Peene Ki Dua: