It is the most celebrated commentary on the Kātantra grammar. Some folios contain glosses. The text starts with the chapter dealing with Parasmaipada. Extent and format of original and physical characteristics: 134 Folios; Complete MS.; Extremely fragile. The original size of the folios are 41X8 cm. Author: Durgasiṃha; Scribe: Durgāprasāda etc (?).