My father narrated to us. He said: Sa`d b. `Abdullah narrated to us. He said: Ahmad b. Muhammad b. Khalid narrated to me from his father from Muhammad b. Sinan from al-Mufaddal b. `Umar. He said: Al-Sadiq Ja`far b. Muhammad said:

Whoever does not have exhortations from his heart, chides from his soul, and a guiding companion has given his enemy a way to his neck.