It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever takes the right of a Muslim by (false) oath, Allah Almighty has made Hell obligatory for him and Paradise forbidden for him." This companion asked: "Even if it is a small thing?" He replied: "Even if it is only a twig of the Salvadora (peelu) tree."