It is narrated from al-Hasan ibn Qarin that He said: "I asked Imam al-Ridha عليه السلام, or he was asked while I was listening, about a man who circumcises his son, and the boy does not pray for a day or two." Imam عليه السلام asked: "How old is the boy?" The response was, "Eight years old." Imam عليه السلام said: "Glory be to Allah سبحانه وتعالى! He leaves prayer?" The narrator replied: "He is in pain." Imam عليه السلام said: "He should pray to the extent that he is able."