Brihat Samhita
मुखपुच्छविभक्ताङ्गं भुजङ्गं आकारं उपदिशन्त्यन्ये । कथयन्त्यमूर्तं अपरे तमोमयं सैंहिकेयऽख्याख्यम् ॥ ५-०३ ॥
Others say that he resembles a serpent in shape with his head severed from his tail; a few that he is bodiless, that he is mere darkness and that he is the son of Siṃhikā.
english translation
mukhapucchavibhaktAGgaM bhujaGgaM AkAraM upadizantyanye । kathayantyamUrtaM apare tamomayaM saiMhikeya'khyAkhyam ॥ 5-03 ॥
hk transliteration by Sanscript