Please help me to know that if a person knowingly or unknowingly enters the masjid for prayer having after night fall (Sperm) and without bathing (Ghusul). What is the rule, please reply. Assalamualaikum

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.

Whoever enters the mosque while in a state of sexual impurity and prays, his prayer is void. If he does so while knowing its prohibition, he is disobedient and he is obliged to repent, and it is feared that he becomes an apostate, because this is a kind of mocking the rituals of Allaah.

Indded, Abu Haneefah is of the view that whoever deliberately prays without ablution becomes an apostate, but if someone does this out of ignoring the ruling, like being a new Muslim, or he did so out of forgetfulness, then his prayer is also void, but he is not sinful because he forgot or did not know the ruling, and he should be taught the ruling.

Moreover, it is not permissible for a person who is in a state of sexual impurity to enter the mosque even for a purpose other than praying according to the view of most jurists as we clarified in Fatwa 84554.

Also, for more benefit, please refer to Fatwa 86829.

Allaah Knows best.