Brihat Samhita
अमृतऽस्वादविशेषाच्च्छिन्नं अपि शिरः किलासुरस्यैदम् । प्राणैरपरित्यक्तं ग्रहतां यातं वदन्त्येके ॥ ५-०१ ॥
Some say that Rāhu, the asura, though his head was cut, dies not but lives in the shape of a planet having tasted of ambrosia.
english translation
amRta'svAdavizeSAccchinnaM api ziraH kilAsurasyaidam । prANairaparityaktaM grahatAM yAtaM vadantyeke ॥ 5-01 ॥
hk transliteration by Sanscript