3-60 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 Ja’far ibn Muhammad ibn Bashar, on the authority of Ubaydullah al-Dihqan, on the authority of Durost ibn Abi Mansoor, on the authority of Abdul Ali - the servant of the Sam Clan - that Aba Abdullah as-Sadiq (MGB) said, “
One’s intellect can be measured by three things: long beard, marking on his ring and nickname.”