大乘義章 7.37

7.37

次辨輕重。殺父最輕，殺母次重，殺阿羅漢罪復轉重，出佛身血轉轉彌重，破僧最重。故《成實》云「破僧最重。何故如是？離三寶故。令僧離佛，亦礙法寶。又於佛所起深嫉心，違轉正法，復惱大眾，應入聖者不得入聖，坐禪學問讀誦禮拜如是等事一切不得，所以最重（此三門竟）。」

Next is distinguishing relative gravity. Killing one's father is the lightest; killing one's mother is heavier; killing an arhat is progressively heavier; shedding the blood of a Buddha is progressively far heavier; schism is the heaviest. Therefore the *Tattvasiddhi* says: "Schism is the heaviest. Why is this? Because it severs [beings] from the Three Jewels. It causes the Saṅgha to be separated from the Buddha and also obstructs the jewel of the Dharma. Moreover, toward the Buddha one conceives a deep jealousy, opposes the turning of the true Dharma, and further troubles the great assembly: those who should enter sagehood are unable to enter sagehood, and activities such as sitting in meditation, learning, reciting scriptures, and bowing in homage are completely barred. For these reasons it is the heaviest." (This concludes the third section.)