Is it permissible for a wife to pray without performing ghusl al-janabah (ritual bath after sexual impurity) if she suffers from excessive vaginal discharge, has never experienced a wet dream, and the same discharge exits after foreplay? And does this discharge affect her major ritual purity?

What a woman finds in terms of secretions not accompanied by lust and not mixed with blood does not necessitate ghusl (ritual bath) but invalidates wudu (ablution). Secretions are divided into pure and impure. As for secretions accompanied by lust, if it is semen, ghusl is obligatory. If it is madhiy (pre-seminal fluid), ghusl is not obligatory; rather, clothes and body must be purified from it, and it invalidates wudu.