What is the ruling on shunning someone who committed adultery with his brother's wife for five years, out of fear that doing so would be considered severing ties of kinship, which would prevent one from entering Paradise?

Adultery is a grave sin, and its enormity increases when committed by a brother with his brother's wife, due to the right the brother has over him and because he was entrusted with his honor.

The ruling on shunning the adulterous brother varies according to circumstances. If the shunning is justified, there is no sin in it, and it is not considered severing ties of kinship.

It is important to note that people's laxity in entering upon women and their disregard for Islamic guidelines can be a cause for falling into indecencies. The husband must protect his wife from anything that exposes her to temptation.