[5/27] al-Uyun: Via the three chains from al-Ridha from his forefathers from the messenger of Allāh صلى الله عليه وآله who said: whomsoever’s understanding is good then for him will be good.
[4/26] al-Kafi: Muhammad b. Yahya from Ahmad b. Muhammad b. Isa AND Muhammad b. Ismail from al-Fadhl b. Shadhan all together from Safwan b. Yahya from Abi al-Hasan al-Ridha عليه السلام who said: From among the signs of understanding are forbearance and silence.
[3/25] al-Kafi: A number of our companions from Ahmad b. Muhammad b. Khalid from Ismail b. Mihran from Abi Said al-Qammat and Salih b. Said from Aban b. Taghlib from Abi Ja’far عليه السلام, that he (the Imam) was asked a question about a matter and he answered it, so the man (who asked the question) said: the Fuqaha do not say this, he said: woe be upon you – and have you ever seen a Faqih?! A true Faqih is one who renounces the Dunya and covets the Akhera and holds onto the Sunnah of the prophet صلى الله عليه وآله
[1/23] al-Kafi: Muhammad b. Yahya al-Attar from Ahmad b. Muhammad b. Isa from al-Hasan b. Mahbub from Muawiya b. Wahb who said: I heard Aba Abdillah عليه السلام saying: seek knowledge and adorn yourself with forbearance and dignity together with it (knowledge), and humble yourself to the one you teach knowledge, and humble yourself to the one from whom you seek knowledge, and do not be tyrannical scholars so that your falsehood drives away your truth.