Rasarnava 3.4

3.4

liṅgāśrayaṃ yathā rūpaṃ liṅgimāyā tu liṅginī
gaganena tu sā jñeyā bhagarekhā tu pañcame //

Just as the form is the resting place of the linga, the Māyā of the bearer of the linga is Liṅginī;
she is to be known through space, and the genital furrow is in the fifth.