 Ṣaṣṭi-tantra, which survives only in fragments, first collected by Frauwallner (1958), later expanded by Steinkellner (2017 Appendix 1), defines inference (anumāna) as follows: To infer is to establish something in the remainder, on the basis of a relation and something perceptible . One of the text’s fragments lists six relations as ones which underpin an acceptable inference: the master servant relation (sva-svāmi-bhāva-saṃbandha), the matter alteration relation (prakṛti-vikāra-saṃbandha), the part whole relation (kārya-kāraṇa-saṃbandha), the cause effect relation (nimitta-naimittika-saṃbandha), the source product relation (mātrā-mātrika-saṃbandha), the association relation (sahacāri-saṃbandha) and the incompatibility relation (vadhya-ghātaka-saṃbandha).Though each of the relations is illustrated, no example of an inference using them is found.