Tomorrow I will go to this wicked sinner...
Tomorrow I will go to this wicked sinner; if I came out with bare head, talk to me as I will answer; but if I came out with covered head, do not talk to me as I will not answer.” Aba Salt said, “The next day his holiness put on his clothes and sat in his prayer niche waiting until Ma’mun’s retainer came and summoned the Imam (a.s.). His holiness set off and I went along with him.
There was a basket of grapes and other fruits before Ma’mun and there was a bunch of grapes in his hands, some of which he had already eaten. As soon as he saw Imam al-Ridha (a.s.), he rose to his feet, hugged the Imam, kissed him on his forehead, and seated him in his own place. Then he offered the grapes to his holiness and said, ‘O son of the Apostle of Allah!
I have seen no better grapes than this.’ His holiness answered: ‘It is likely that the grapes are from the Paradise!’ Ma’mun said, ‘Eat from them.’ The Imam said, ‘Spare me.’ Ma’mun responded. ‘There is no way. Why don’t you eat? Are you accusing me or suspicious of me?’ His holiness took the bunch and picked three grapes and threw the rest on the ground and stood up.
Ma’mun said, ‘Where are you going?’ The Imam said, ‘Where you have sent me to.’ Then, while his head was covered, came out and I (Aba Salt) did not talk to him. His holiness entered the house and lay down in his bed and ordered the house door to be closed. I closed the door and sadly lingered on in the courtyard. All of a sudden I saw a charming black-haired youth who looked most like Imam al-Ridha (a.s.).
I went toward him and said, ‘How did you come in through the closed door?’ he said, ‘The One who brought me here from Medina at this moment, the same One took me in the house through the closed door.’ I asked who he was. He said, ‘I am the proof of Allah to you O Aba Salt! I am Muhammad b. ‘Ali (Imam al-Jawad).’ Then, he went to his noble father.
As soon as Imam al-Ridha (a.s.) saw his son, he rose to his feet, hugged him, and kissed him on his forehead and showered kisses on him, talked to him in secret (about Imamate) that I did not understand… Then, his blessed soul joined the Garden of Divine pleasure. Imam al-Jawad (a.s.) began to perform the funeral ablution for his father.