na cāvisaṃvādo 'rthakriyālakṣaṇa eva, tadarthatvāt pramāṇacintāyāḥ / yatp 'rthakriyārthī pramāṇam apramāṇaṃ vānveṣate prekṣāvān na vyasanitayā /
And non-contradiction has the characteristic of effective action alone, since the investigation of valid means of knowledge is for that purpose, as a rational person who seeks effective action investigates [whether something is] a valid or invalid means of knowledge, not out of [mere] habit.