7-72 Muhammad ibn al-Hassan ibn Ahmad ibn al-Walid - may God be pleased with him - narrated that Muhammad ibn al-Hassan al-Saffar quoted Ahmad ibn Muhammad ibn Isa, on the authority of Abdul Rahman ibn Amr ibn Aslam, “I saw Abal-Hassan Musa ibn Ja’far al-Kadhim (MGB) perform phlebotomy on a Wednesday while he had a fever. The fever did not end until Friday when he had the phlebotomy done again.”