Shiva Purana
खशा तु यक्षरक्षांसि मुनिरप्सरसस्तथा ॥ अरिष्टासूत सर्पांश्च प्रभावैर्मानवोत्तमान्॥ ५१॥
Khasha the yakshas rakshasas the sage and the apsaras Arishta gave birth to serpents and the best of human beings by their powers.
english translation
khazA tu yakSarakSAMsi munirapsarasastathA ॥ ariSTAsUta sarpAMzca prabhAvairmAnavottamAn॥ 51॥
hk transliteration by Sanscript