atrocyate śabarasvāminānumānalakṣaṇam uktam anumānaṃ jñānasambandhasyaikadeśadarśanād ekadeśāntare 'sannikṛṣṭe buddhiḥ
Here it is stated: Śabarasvāmin has given the definition of inference [as follows]: "Inference is the cognition of an unperceived factor from seeing one factor of a known relationship."