Answer:
(Fatwa: 1595/1237/D=1431)
(1) If the customer is aware of the adulteration, there is no harm in selling water mixed milk.
(2) If one does not intend to cheat, there is no harm to mix water in the milk. However, it is better to sell it without mixing water.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
