Abu Umamah Iyas bin Tha`labah Al-Harithi (May Allah be pleased with him) said: The Messenger of Allah (Sallallahu Alaihi Wasallam) said, "He who misappropriates the right of a Muslim by taking a false oath, Allah will condemn him to the fire of Hell and will forbid Jannah for him.'' A person asked: "O Messenger of Allah, (Sallallahu Alaihi Wasallam) even if it is something insignificant?'' He (Sallallahu Alaihi Wasallam) replied, "Yes, even if it is the twig of the Arak tree.'' [Muslim].
