No Sanskrit text: al-Bīrūnī wrote in Arabic, and the passage survives here only in Sachau's English.
Al-Bīrūnī records TWO Sanskrit names for the circumpolar aquatic figure: 'a four-footed aquatic animal, which they call Sakvara, and also Śiśumāra.' Sakvara is otherwise unattested and no Sanskrit source for it could be found; the underlying form may be śākvara ('bull-like, mighty') or a corruption of śiśumāra itself — treat as unverified. The Devanagari above is a transliteration of Sachau's Latin-script form, marked (?) like Śūla's, and is NOT an attested spelling. His etymological note is the prize: 'I suppose that the latter animal is the great lizard, for in Persia it is called Susmār, which sounds much like the Indian Śiśumāra' — independent support for the Draco reading already on file. He then gives the Viṣṇu-Dharma's fourteen-star roster, which differs from the Purāṇic versions on file by putting NĀRĀYAṆA ON THE BREAST and the two Aśvins on the hands. He closes with a jab — 'How simple those people are! Among us there are scholars who know between 1020 to 1030 stars' — and a methodological admission that explains why his own nakshatra guesses are weak: 'If I had found a Hindu able to point out to me with his finger the single stars, I should have been able to identify them with the star-figures known among Greeks and Arabs.'