A hitherto unknown, extensive copy of Sureśvara's great sub-commentary on Śaṅkara's gloss on the Bṛhadāraṇyakopaniṣad. The numeration, in 8 adhyāyas, differs from that of the editions, but is generally found in the Thrissur manuscripts. The manuscript is in a poor state of preservation, and very fragile. The copy is incomplete, with the beginning missing, as well as many leaves in the middle. Divisions identified so far are as follows: 31r2: end of 3.3; 101r, last line: end of 5.2; 118v-119r: end colophon of adhyāya 5 (= adhyāya 3 in the edition), etc.
Custodial history: Formerly belonged to Thekke Madham, Thrissur (uncertain).
Extent and format of original material: 162 leaves.
Physical characteristics: Size: W 4.9 L 52.2. 2 string holes; 2 wooden covers; 1 string (modern).
Owner(s) of original material: Brahmaswam Madham, Thrissur.
Author(s) of original material: Sureśvara.
Scribe of original material: Unknown.
