Removing Najasah from the body and clothes

Q: If a man urinates and does not perform Istinja' (cleansing the private parts with water after urination), then performs Wudu' (ablution) and prays, is his Salah valid? If not, should he repeat it even if he has a legal excuse continuing for a long time?

A: If he makes Istijmar with three or more pure stones before making Wudu', his Salah is valid. However, if he does not make Istinja' or Istijmar before Wudu', his Salah is invalid. He should repeat it after ritual purification even if after a long time.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.