5-43 Muhammad ibn Ali Majiluyih - may God be pleased with him - narrated that Muhammad ibn Yahya al-Attar quoted Muhammad ibn Ahmad, on the authority of Sahl ibn Zyad, on the authority of Muhammad ibn Sin’an, on the authority of Ubaydullah ibn Abdullah al-Dihqan, on the authority of Durost, on the authority of Abi Ibrahim Al-Kadhim (MGB) that God’s Prophet (MGB) said, “You should avoid the following five groups of people under all circumstances: those who have leprosy; those who have vitiligo; the insane; those born of adultery; and the Bedouin Arabs.”