Potthaka Sutta
Quite new fibre cloth is of an ill colour, painful to handle and of little worth; so is one of middling wear and one worn out. Men use worn out fibre cloth for wiping cooking pots or they throw it away. So are a novice, a monk of middle standing, or a senior monk, any of whom is immoral, of “ill colour.” Their followers suffer because of them; hence they are painful to handle, and because gifts to them produce no good they are of little worth. A.i.246 f.