a person discharges Madhy while performing Salah, both his Wudu' (ablution) and Salah become invalid and it is Wajib (obligatory) for him to wash his penis and testicles, perform new Wudu', and perform the same Salah again. (Part No. 4; Page No. 112) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.