瑜伽論記 11.70

11.70

自逼惱苦謂無繫外道者，則尼犍子懸頭刺股拔髮類等，一類威儀多時位者，坐臥立等隨一多住也。後五十五苦不取根本九苦，但取餘隨生苦。第二門中有四種苦故，故得成五十五。

Regarding the suffering of self-inflicted torment, this refers to non-Buddhists such as the Nirgranthas, who hang upside down, pierce their thighs, pluck out their hair, and the like; and those who abide in one kind of deportment for a long period, remaining predominantly in one [posture] such as sitting, lying down, or standing. The latter fifty-five forms of suffering do not take the basic nine forms of suffering, but only take the remaining accessory born sufferings. Because there are four kinds of suffering in the second category, they can amount to fifty-five.