Does water inside a tank lose its purity when a dead pigeon falls inside and changes its smell?

Q: What is the ruling on the Wudu' (ablution) of some people who used water from a tank, then after a week discovered a dead pigeon inside it? They kept using water from the tank for Wudu' and Taharah (ritual purification) for a week before they discovered the dead pigeon until the smell of water changed. We appreciate your advice. May Allah reward you with the best.

A: All the people who performed Wudu' from the water referred to in the question, after its characteristics had changed due to the death of a pigeon inside the tank, have to repeat the Salahs (Prayers) for which they performed Wudu' from that altered water. This is because they have been performing Wudu' from Najis (ritually impure) water which does not remove the state of Hadath (ritual impurity that invalidates ablution). And Allah knows best.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.