The Long Āgama Sūtra 8.21

8.21

「或被衣，或披莎衣，或衣樹皮，或草襜身，或衣鹿皮，或留頭髮，或被毛編，或著塜間衣，或有常舉手者，或不坐牀席，或有常蹲者，或有剃髮留髦鬚者，或有臥荊棘者，或有臥果蓏上者，或有裸形臥牛糞上者；或一日三浴，或有一夜三浴，以無數眾苦，苦役此身。云何，尼俱陀！如此行者，可名淨法不？」

“Sometimes, you wear clothes, throw on sedge as clothes, wear tree bark, curtain yourselves in grass, or wear deerskin. Sometimes, you fasten head hair to yourselves, wear plaited hair, or wear clothes from a charnel ground.

“Sometimes, you keep your arms raised all the time, don’t sit on couches or mats, or crouch all the time. Sometimes, you cut your hair and fasten it to your beard, lie on thorns, lie on fruits and berries, or lie naked in cow dung. Sometimes, you bath three times a day or three times a night. You torment your bodies with these countless hardships. How is it, Nigrodha? Can such practices be called a pure teaching?”