Shiva Purana
जंघास्फिक्कटिपार्श्वेषु वामदेवस्य भावयेत्॥ सद्यस्यापि कला चाष्टौ नेत्रेषु च यथाक्रमम्॥ ७३॥
One should meditate on the left side of the thighs, sphincter and waist. The art of the present is also in the eight eyes in order.
english translation
jaMghAsphikkaTipArzveSu vAmadevasya bhAvayet॥ sadyasyApi kalA cASTau netreSu ca yathAkramam॥ 73॥
hk transliteration by Sanscript