 It is not certain whether Jayarāśi composed any other work. He himself refers to a treatise entitled Lakṣaṇa-sāra (‘The Quintessence of the Definition [of Cognitive Criteria (pramāṇa)]’) on one occasion, while refuting the usage of the term ‘non-verbal’ (avyapadeśya) in the definition of the cognitive criterion (pramāṇa, or ‘veridical instrument of knowledge’) of the Nyāya school. There, he says that the inapplicability of the term has already been shown in the Lakṣaṇa-sāra and one should consult that work. It is highly probable that he indeed refers to his own text for the simple reason that he generally does not mention any works of any other authors either in support of his own views or in favourable light, except for the materialist teacher Bṛhaspati and his Bṛhaspati-sūtra. Still, it is not impossible that the text he referred to under the title Lakṣaṇa-sāra might have been penned by another representative of the Cārvāka / Lokāyata school who had been held in esteem by Jayarāśi, e.g. his own guru.