梵網經菩薩戒本疏 6.88

6.88

四、具緣者，此中有五種戒：一、觀鬪戒，二、聽樂戒，三、博戲戒，四、妓術戒，五、賊使戒。然此五戒各具四緣犯：一、有所對用，二、有心趣向，三、造趣方便，四、事成，結犯。皆準可知。

Fourth, possessing the conditions: here there are five kinds of precepts: 1. the precept against watching fighting; 2. the precept against listening to music; 3. the precept against gambling and games; 4. the precept against magical arts; 5. the precept against acting as a bandit's messenger. Now, each of these five precepts constitutes an offense upon fulfilling four conditions: 1. there is an object to engage with; 2. there is the intention to proceed toward it; 3. one engages in the preparatory action of proceeding; 4. the act is completed, adjudicating the offense. All can be understood accordingly.