Matsya Purana 48.69

48.69

dadhnā lavaṇamiśreṇa svasaktaṃ madhukena tu.
lihamāma jugupsantī āpādatalamastakam..
tatastvaṃ prāpsyase devi! putrān vai manasepsitān.. 48.69 ..

“O, Devi! Cast off your bashfulness and then lick the whole of my body with your tongue, after rubbing it with salt, curds and honey; you will then attain your wish and get sons.”—69.