yasmād bhedo vyāvṛttir yadbhedas tatra vyavasāyo niścayas tasya kāraṇamabhyāsaḥ pratyāsattis tāratamyabuddhipāṭavaṃ cetyādi /
The cause of this certainty regarding difference [or] distinctness consists in repetition, proximity, gradual development of understanding, and so forth.