律戒本疏 1.94

1.94

四十一知水有虫取用犯墮　闡陀比丘作是念言。澆埿草土先所不聽。今者自用故應不犯便耳。虫水隨意入用人。問何故用此虫水。答言。我自用水不用虫。因是復結。若有虫水一切悉犯此戒。澆埿草土以說有虫。虫想無虫想若疑。用者犯墮。無虫虫想若疑。用者犯突。無虫無虫想。用者悉無犯也。

Forty-one: Knowingly taking and using water that contains living creatures commits an offense of pāyattika. The monk Chanda thought to himself: 'Pouring [water] on mud, grass, and earth was previously disallowed. Now, using it for myself should not be an offense.' He then used creature-bearing water as he pleased. People asked: 'Why do you use this creature-bearing water?' He replied: 'I myself am using the water, not using the creatures.' For this reason, it was again formulated. If water contains creatures, all [uses] violate this precept. If, in pouring it on mud, grass, or earth, it is said to have creatures: if one conceives it to have creatures, or conceives it not to have creatures, or if one has doubts, using it commits an offense of pāyattika. If it has no creatures, but one conceives it to have creatures or has doubts, using it incurs a duṣkṛta. If it has no creatures and one conceives it not to have creatures, using it is entirely without offense.