2-50 Ahmad ibn Muhammad ibn Yahya al-Attar - may God have Mercy upon him - narrated that his father quoted Ahmad ibn Muhammad ibn Khalid, on the authority of Muhammad ibn Ali al-Kufy, on the authority of Muhammad ibn Sin’an, on the authority of Umar ibn Abdul-Aziz, on the authority of Al-Khaybari, on the authority of Yunus ibn Zabyan and al-Mufaz’zal ibn Umar, on the authority of Aba Abdullah as-Sadiq (MGB), “One who has two characteristics is good. Otherwise you should avoid him.” He was asked, “What are these two characteristics?” The Imam (MGB) replied, “Being careful to say his prayers on time and being sympathetic with others.”