俱舍論記 18.28

18.28

「論曰至過此無限」者，釋上兩句，明破法輪。如文可知。又《婆沙》云「問：破僧時，佛在眾中不？答：佛時住彼界內而不在眾。云何知耶？曾聞：提婆達多欲破僧時，佛以慈愍故呵制之，言：『提婆達多！汝勿破僧，勿起極重惡不善，勿趣非愛大苦果處。』佛雖如是慇懃呵制，而彼都無止息之心。爾時世尊起正智見審觀前際，而我昔時破他眷屬。即自觀見，昔我無量無數劫前曾破壞他仙人眷屬。彼業異熟，今現在前。觀見是已，知此僧眾定當破壞，便入靜室默然宴坐，提婆達多便破壞僧。故知世尊在於界內而不在眾。」

"The treatise says: […] beyond this, there is no limit" explains the first two lines, elucidating the schism of the wheel of Dharma. It is understandable from the text. Furthermore, the Vibhāṣā says: "Question: When the Saṃgha was split, was the Buddha within the assembly or not? Answer: At that time, the Buddha resided within that boundary, but was not in the assembly. How is this known? It was heard that when Devadatta was about to split the Saṃgha, the Buddha, out of compassion, admonished and forbade him, saying: 'Devadatta! Do not split the Saṃgha; do not give rise to extremely grave, unwholesome evil; do not head toward a place of disagreeable, great fruition of suffering.' Although the Buddha admonished him earnestly like this, Devadatta had no thought of stopping. At that time, the World-Honoured One gave rise to correct knowledge and vision, thoroughly examining the past: 'Did I in past times split another's retinue?' He then saw for himself that countless, innumerable kalpas ago, he had destroyed another ṛṣi's retinue. The maturation of that karma was now manifesting before him. Having seen this, he knew that this Saṃgha would definitely be broken, so he entered a quiet room and sat silently in meditation, and Devadatta then broke the Saṃgha. Therefore it is known that the World-Honoured One was within the boundary, but was not in the assembly."