This is a Phlilosophy text on Navya-Nyāya school, founder of the Navyanyāya school; came of a family whose original home was the village Chādana in Mithilā; belonged to Kāśyapagotra; father and teacher of Vardhamāna Upādhyāya (a. of C.s on Kusumāñjali, Kiraṇāvalī etc.) who refers to his father as Gaṅgeśvara and a poet (Sukavi-kairavakānanendu). The text describes the Anumāṇa khaṇḍa of Tattvaciṇtāmaṇi. Anumāṇa khaṇḍa is 2nd part of the book and it describes various subcontents, one of them is Hetvābhāsa, which is a fallacious reason (Hetu) that appears to be valid but is not, thus obstructing the attainment of correct inferential knowledge. There are five classical fallacies; Savyabhicāra (Irregular Reason), Viruddha (Contradictory Reason), Satpratipakṣa (Counter-balanced Reason), Asiddha (Unproved Reason), Bādhita (Contradicted Reason) but the text here only describes f. 1–2 Satpratipakṣa, f.4 Asiddha, f.5–8 Bādhita so the manuscript is incomplete and not mentioned colophon part. Title from title abbreviations in margins; alternate title Cintāmaṇi from abbreviations in margins.; Written in 10–13 lines per leaf.; 10 leaves foliated 1–8, 10–11, upper left and lower right verso.; Mistakes blacked out; some corrections and additions in margins; significant syllables, words, or phrases highlighted in red throughout.; Watermarks of a coat of arms with the letters G. M. (possibly referring to the paper maker Gior Magnani) below it.