法苑珠林 94.42

94.42

又十誦律云。不洗大行處。不得坐臥僧臥具上得罪。

Furthermore, the Daśādhyāya Vinaya says: "If one does not wash the place of defecation, one may not sit or lie on the bedding of the Saṃgha; [to do so] incurs an offense."