It is narrated from Hazrat Abu Umamah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever usurps the right of a Muslim through his oath, Allah makes Hell obligatory for him and forbids Paradise for him. Someone asked, "O Messenger of Allah! Even if it is a small thing?" The Noble Prophet (peace and blessings be upon him) said: "Even if it is only a twig of the arak tree."