al-Qasim ibn Muhammad القاسم بن محمد بن أبي بكر الصديق · The Book of Purification and its Sunnah

The Messenger of Allah said: "Performing ablution properly is half of faith, saying Al-Hamdu Lillah fills the Scale (of good deeds), saying Subhan-Allah and Allahu Akbar fills the heavens and the earth, prayer is light, Zakat is proof, patience is brightness and the Qur'an is proof for you or against you. Every person goes out in the morning to sell his soul, so he either frees it or destroys it.'"

"The Messenger of Allah said: 'If you drink milk, then rinse your mouths, for there is some greasiness in it.'"

They asked 'Abdullah bin Abi Awfa about dry ablution. He said: "The Prophet commanded 'Ammar to do like this;' and he struck the ground with his palms, shook the dust off and wiped his face. (Da'if)Hakam said, "and his hands," Salamah said, "and his elbows."

"The Messenger of Allah, if he needed any of his wives, would satisfy his needs then he would sleep as he was, without touching water."