So called because he was always sweeping. One day he saw Khadiravaniya Revata in his cell and thought him an idler. Revata read his thoughts, and, wishing to admonish him, asked him to return after a bath. When Sammuñjanī did so, Revata taught him on the duties of a monk. Sammuñjanī became an Arahant, and all the rooms remained unswept. The monks, reported this to the Buddha, who, however, declared him free from blame, since there was no need for him to continue sweeping. DhA.iii.168 f.