Hosting

Q: How should one treat ones guest? Does the guest have any rights? Does the Ahadiths mention any thing regarding ones guest also if one shows disrespect to his / hers guest is it a sin? Is it correct to ask if you'll will have anything? If mufti saheb could narrate any incedient in the live of nabi [Sallallahu Alayhi Wasallam], the sahabaa [Radiyallahu Anhum] and in the lives of great uleama of deoband on how they took care of their respected guess?

Q: My father works in a bank. He is however a pious man, I am his married daughter. Is his salary halaal for me when i go to stay at his home, is eating there ok for me?