Is it permissible to kiss the [fore]head of a parent if he only prays sometimes or not at all?
After having prayed, I noticed a very small bit of impurity on my undergarments, so what should I do? Should I repeat the prayer, or is it sufficient for me to just clean the undergarments?
If someone wears a garment which shows some parts of his body from underneath, such as his thighs and shoulders, is his prayer [in that garment] correct?
[What is the ruling regarding] extending the greeting [of as-salaam ‘alaykum] upon entering the masjid – whether someone is in there or not?