Nyāya Sūtras 185.4

185.4

yo 'yaṃ prakṛter aniyama uktaḥ sa niyato yathāviṣayaṃ vyavasthito niyatatvān niyama iti bhavati, evaṃ saty aniyamo nāsti, tatra yad uktaṃ prakṛtyaniyamād iti, etad ayuktam iti//55//

This non-regularity of original material that was stated is itself regular, determined according to its respective domain; because it is regular, it becomes a regularity. This being so, there is no irregularity; hence, what was said—'because there is no regularity of original material'—is improper.