梵網經菩薩戒本疏 6.39

6.39

初、制意者，菩薩理宜殞命護法，何容故違聖教？別請所親，乃是俗中曲席，豈成福會？別顯亦三：一、害佛僧次之教；二、失自無限善根；三、誤常受學眾生。故須制也。

First, the intention of instituting the precept: A bodhisattva should rightly sacrifice life to protect the Dharma; how could they intentionally violate the noble teaching? Individually inviting those close to oneself is merely a partial gathering of the mundane; how could it accomplish a feast of merit? In particular, it also shows three points: 1. It harms the Buddha's teaching on the Saṅgha rota; 2. It loses one's own boundless roots of goodness; 3. It misleads sentient beings who constantly receive training. Therefore, it had to be instituted.