Answer
(Fatwa: 1236/1236=M/1430)
Performing salah in the state of janabah (seminal impurity) is unlawful, the salah will be invalid whichever salah it may be, whether performed at home or in mosque. If someone knows he is impure while he is aware of the Islamic ruling as well, he is feared to commit kufr. He must seek forgiveness from Allah and repent to Him. The fardh and wajib salah performed in this state should compulsorily be repeated. If someone performed salah in the state of janabah forgetfully or unintentionally he should repeat the fardh and wajib salah after he comes to know the same. There is no qadha of Eid Salah and in the place of Jumu’ah Salah four rak?ah of Zuhr will be performed
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband