折疑論 2.123

2.123

以其受身體於父母。不敢毀傷。故使弟子開衾而視之曰。父母全而生之。子當全而歸之。可謂孝矣。今之沙門（梵語沙門。此云勤息）。

Because he received his body from his parents and did not dare damage it, he had his disciples uncover the quilt and inspect it, saying: 'My parents gave birth to me whole, and as a son I should return it whole.' This may indeed be called filial. Now, the śramaṇas (the Sanskrit term 'śramaṇa' means 'diligent cessation' here),