28-8 Al-Hussein ibn Ahmad ibn Idris - may God be pleased with him - narrated that his father quoted on the authority of Muhammad ibn Ahmad ibn Yahya ibn Imran al-Ash’ari, on the authority of Ibrahim ibn Hashem and others, on the authority of Safwan ibn Yahya, on the authority of Abil Hassan Al-Ridha (s), “God’s Prophet (s) has admonished against talking with others or answering them while one is busy in the toilet.”