I was in Medina. The Imam (a.s.) entered the mosque to say farewell to God’s Prophet (S). Ar-Ridha’ (a.s.) said farewell several times. Each time he (a.s.) asked for permission to leave, took a few steps back, but returned to the shrine and the sound of his crying could be heard. I went to him and greeted him. Ar-Ridha’ (a.s.) greeted me back. I congratulated him. He (a.s.) said, “Leave me alone. I will be leaving my grandfather (a.s.) and die in loneliness. I will be buried beside Harun.” I followed Ar-Ridha’ (a.s.) all the way until he (a.s.) reached Khorasan. He died in Toos and was buried beside Harun.”