俱舍論記 28.202

28.202

「若修金剛至依自說故」者，釋後兩句。若修金剛喻定便得諸漏永盡。理實修此金剛喻定通依諸地，而經但說第四靜慮得漏盡者，毘婆沙師傳說：世尊依自說故。以佛世尊但依第四得漏盡故，於六通中但說二者，天眼通能觀生死，漏盡通能得涅槃，經偏說。

"From 'If one cultivates the diamond-like' up to 'because it is spoken relying on himself'" explains the final two lines. If one cultivates the diamond-like concentration (vajropama-samādhi), one attains the permanent exhaustion of all contaminants. In actual principle, cultivating this diamond-like concentration applies in reliance on all grounds, yet the sūtra speaks only of attaining the exhaustion of contaminants in the fourth dhyāna. The masters of the Vibhāṣā transmit the tradition: 'Because the World-Honoured One spoke relying on himself.' Because the Buddha, the World-Honoured One, attained the exhaustion of contaminants relying solely on the fourth [dhyāna]. Among the six supernormal powers, only two are spoken of because the supernormal power of the divine eye can observe birth and death, and the supernormal power of the exhaustion of contaminants can attain nirvāṇa; hence the sūtra specifically mentions them.