The boy was breastfed by his aunt

Q: My father is married to a woman and has a child. After marriage, it was claimed that his paternal sister had breastfed his wife. My father's sister had died, and we have no idea about the number of times of this breastfeeding, and whether this is true or not. It was just claimed, and we are in doubt. Please advise.

A: The original ruling is that a marriage is valid until breastfeeding is proved to have occurred (Part No. 21; Page No. 139) with its conditions: being in the first two years, as the Prophet (peace be upon him) said, The only breastfeeding that creates the relationship of Mahram (unmarriageable relatives) is that which fully satiates the stomach before weaning. Narrated by Al-Tirmidhy and ranked as Sahih (authentic). They must be five times of breastfeeding. It was authentically reported from `Aishah (may Allah be pleased with her) that she said, It was among the revelation of the Qur'an that ten known times of breastfeeding make the marriage prohibited, but this was later abrogated and reduced to five. The Messenger of Allah (peace be upon him) died and the ruling remained effective. Narrated by Muslim, Abu Dawud and Al-Nasa'y. Otherwise, the original ruling is that the marriage is valid, so you should not doubt it or hesitate.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.