四分律比丘含注戒本 2.147

2.147

(The Buddha was in Śrāvastī. The group-of-six and the group-of-seventeen were traveling on the same road and arrived at a small dwelling place. The group-of-seventeen entered the monastery first, swept and sprinkled water to clean it. The group-of-six, knowing that they had obtained a good place, drove them up and dragged them out. The bhikṣus reported the offense to the Buddha, who thereupon formulated this precept.)