一部经，佛陀告诉行牛戒与行狗戒的两位苦行者，模仿畜生的苦行只会导致堕入地狱或投生为畜，并进而开示黑业、白业等四种业及其果报。

A discourse in which the Buddha tells an ox-vow ascetic and a dog-vow ascetic that their animal-imitating practices lead only to rebirth in hell or as beasts, then explains the four kinds of action by their dark or bright outcomes.