Original
प्रमाणषट्कविज्ञातो यत्रार्थो नान्यथा भवन् ।
अदृष्टं कल्पयत्यन्यं साऽर्थापत्तिरुदाहृता ॥ १५८७ ॥pramāṇaṣaṭkavijñāto yatrārtho nānyathā bhavan |
adṛṣṭaṃ kalpayatyanyaṃ sā’rthāpattirudāhṛtā || 1587 ||“If a certain fact, cognised through the six means of cognition. is found to be otherwise inexplicable, and thence leads to the assumption of some other fact,—this is called ‘arthāpatti’ ‘presumption’”.—[Kumārila: Ślokavārtika-arthāpatti, 1.]—(1587)
Kamalaśīla
The following has been urged in regard to ‘Presumption’ (which has been regarded as an independent Means or Form of Cognition, by Mīmāṃsakas):—[see verse 1587 above]
In regard to Time, Place, etc., when a certain fact has been duly cognised through the six Means of Cognition,—in the shape of Perception, Inference, Analogy, Word, Presumption and Negation,—and it is found to be otherwise inexplicable,—if a certain other fact were not. there,—then the assumption of this other fact is made pertaining to what is not perceptible;—this assumption is the Means of Cognition called ‘Presumption’.
‘Called’—i.e. by Śabarasvāmin; who says (under Sū. 1. 1. 5)—‘Presumption consists in the presuming of something not seen, on the ground that a fact already perceived or heard of would not be possible without that presumption; for instance, it is found that Devadatta, who is alive, is not in the house,—and this non-existence in the house (which is seen) leads to the presumption that he is somewhere outside the house’.
In this passage, the term ‘seen’ stands for ‘cognised through the five means of Cognitions other than Word’; and ‘heard of’ stands for ‘cognised by means of the Word—(1587)