On Yuan Chwang's Travels in India, 629–645 A.D. v1.c8.s3.4

v1.c8.s3.4

It will be seen that Yuan-chuang here puts the Kṣaṇa below the Tatkṣaṇa, in this agreeing with the Abhidharma treatises of Sanghabhadra and Dharmatara. The Divyāvadāna, on the other hand, makes 120 Tatkṣaṇas equal to one Kṣaṇa, and 60 Kṣaṇas equal to one Lava. In some Chinese versions of the sacred books the tatkṣaṇa is not mentioned. The kṣaṇa is defined as the time occupied by a woman in spinning one hsün (尋) of thread, but the word is generally used by Buddhist writers in the sense of an instant, the twinkling of an eye, the very shortest measurable space of time.