'I was in the presence of Abu Ja'far Muhammad b. 'Ali al-Baqir when his son Ja'far entered. He had a forelock on his head and had a stick in his hand which he was playing with. Al-Baqir (AS) took him in his arms and hugged him tightly, then said, may my parents be your ransom, you are neither distracted, nor do you play.' He then addressed me and said, ?O Muhammad! This is your Imam after me, so follow him and benefit from his knowledge. By Allah, verily he is the truthful one [al-Sadiq] whom the Prophet (SAWA) described to us. Certainly his followers will be victorious in this world and in the Hereafter.'