What are the nullifiers of ablution (wudu), the invalidators of prayer (salat), the ruling on the facility in which a cavity is made for thanksgiving after ritual bathing (ghusl) from major ritual impurity (janabah), and how to perform ritual bathing (ghusl) from major ritual impurity (janabah)?

The agreed-upon and disputed nullifiers of ablution are: anything that exits from the two private parts, loss of sanity (due to insanity, drunkenness, sleep, fainting), touching the private parts with the palm or back of the hand without a barrier, eating camel meat, and apostasy. As for using a towel to dry the limbs after ablution or ghusl, it is permissible. We have previously explained the nullifiers of prayer and how to perform ghusl from janabah.