@LakshmiNarayanan By the way, here is a quote from Yamunacharya's Siddhitrayam listing various pre-Shankara commentators: "For the sake of this objective, the Sutras were written by Bhagavat Badarayana; they were then explained by the author of the bhashya, which expressed tersely their profound meaning; this was explained in detail by Bhagavat Srivatsankamishra who declared the truth profound as an ocean. Nevertheless people, whose minds have become confused because they relied upon the works, both good and bad, written by the masters Tanka, Bhartriprapancha, Bhartrimitra, Bhartrihari, Bra…