When we were on a journey with the Messenger of Allah (ﷺ) and he had gone to releive himself, we saw a Hummarah with two young ones. We took the young ones. The Hummarah came and began to spread out its wings. Then the prophet (May peace be upon him) came and said : who has pained this young by the loss of her young? Give her young ones back to her. We also saw an ant-hill which we had burned. He asked? Who has burned this? We replied : we have. He said: it is not fitting that anyone but the lord of the fire should punish with fire.
The Prophet said: “The five daily prayers, from one Friday to the next, and fulfilling the trust are all expiation for whatever (sins) come between them.” I said: “What is fulfilling the trust?” He said: Having a bath to cleanse oneself from sexual impurity, for under every hair there is the state of sexual impurity.”
“There came to us a letter from the Prophet (ﷺ) (saying): ‘No not make use of the untanned skin and sinew of dead animals.’”