四分戒本疏卷第一．第二．第三 3.119

3.119

There are four specific conditions: 1. It is one's own property. 2. One has performed the procedure of genuine permissible bestowal. 3. One does not inform the owner to let them know. 4. Taking and using it, which constitutes an offense. This precept was instituted because the group of six made a genuine bestowal of a robe to a close friend, and the bhikṣu later wore it without asking. The bhikṣus reported this to the Buddha, who rebuked them and instituted the precept.