It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "I am like a father to you and I teach you just as a father does. So when any man goes to relieve himself, he should neither face the Qiblah nor turn his back towards it, and no man should perform istinja (cleaning) with less than three stones."