Ashtangasamgraha 9.24

9.24

That very sleep, properly applied, endows the body with happiness and longevity, / just as the pure intellect [is attained] by an ascetic devoted to yoga through asceticism. / In thirst accompanied by burning sensation, with nausea in the heart and chest, / with both types of sārivā, both types of rajanī, both types of sthirā, phalinī, and nata.