Is the marriage of a man to his maternal uncle's daughter valid if her grandmother (the maternal uncle's mother) breastfed the maternal uncle's son several times during his mother's absence, knowing that the girl's grandmother mentioned that what came out of her breast was a water-like liquid?

The issue involves three matters: 1. The liquid that the wife nursed from the grandmother does not establish حرمة (prohibition) unless it was milk that provided nourishment, even if its color changed. Furthermore, the suckling must consist of five full, satisfying sucklings. 2. The testimony of the grandmother alone establishes suckling according to the Hanbalis, provided she is trustworthy. This is the more preponderant opinion. 3. The wife's informing about what was attributed to the grandmother is not sufficient; rather, it must be established.

Therefore, the establishment of المحرمية (prohibition by reason of suckling) between the spouses is unlikely. However, if it is established, the marriage would be dissolved.