Charak Samhita
व्यामिश्रलिङ्गैरेतैस्तु क्लीबदष्टं नरं वदेत् । इत्येतदुक्तं सर्पाणां स्त्रीपुङ्क्लीबनिदर्शनम् ॥१३२॥
If mixed characters is found, one should be known as bitten by an eunuch snake.Thus characters of female, male and eunuch snakes are said.
english translation
vyAmizraliGgairetaistu klIbadaSTaM naraM vadet । ityetaduktaM sarpANAM strIpuGklIbanidarzanam ॥132॥
hk transliteration by Sanscript