Mukhtasar Muslim

Narrated from Sayyiduna Abu Umamah (i.e., Harithi) رضي الله عنه that the Messenger of Allah صلى الله عليه وسلم said: Whoever seizes the right of a Muslim (whether it is wealth or something other than wealth, such as the skin of a dead animal, dung, etc., or other types of rights such as the right of pre-emption, the right to water, the punishment for slander, the turn to stay with the wife, etc.) by swearing an oath, Allah Almighty has made Hell obligatory for him and has forbidden Paradise for him. A man said, "O Messenger of Allah! Even if it is a small thing?" The Prophet صلى الله عليه وسلم replied, "Even if it is only a twig of the arak tree."