諸經要集 20.63

20.63

又十誦律云。不洗大行處。不得坐臥僧臥具上得罪。

Also, the Sarvāstivāda-vinaya states: “If one does not wash the place of major excretion, one must not sit or lie on the bedding of the Saṅgha; [otherwise,] one incurs an offense.”