Musannaf Ibn Abi Shaybah

Hazrat Rabi’ used to say: O Bakr bin Ma’az! Use your tongue for beneficial matters. Avoid harmful speech. I consider people to be unaware regarding my piety. Obey Allah in those matters which you know. Refer whatever reaches you to the one who knows about it. For knowingly making a mistake is more dangerous than an error. Not everything of yours is good, but it is better than evil. Not all the things given to the Prophet ﷺ have reached you, and you do not understand everything you read. The things that are hidden from people are apparent to others. Seek a remedy for them. Then, addressing himself, he would say: Its cure is to repent in the court of Allah and then not to sin again.