The Kama Sutra of Vatsyayana by Vatsyayana
Of kissing the yoni should be known from kissing the mouth
The people of Eastern India do not resort to women who practise the Auparishtaka.
The people of Ahichhatra resort to such women, but do nothing with them, so far as the mouth is concerned.
The people of Saketa do with these women every kind of mouth congress, while the people of Nagara do not practise this, but do every other thing.
The people of the Shurasena country, on the southern bank of the Jumna, do everything without any hesitation, for they say that women being naturally unclean, no one can be certain about their character, their purity, their conduct, their practices, their confidences, or their speech. They are not however on this account to be abandoned, because religious law, on the authority of which they are reckoned pure, lays down that the udder of a cow is clean at the time of milking, though the mouth of a cow, and also the mouth of her calf, are considered unclean by the Hindoos. Again a dog is clean when he seizes a deer in hunting, though food touched by a dog is otherwise considered very unclean. A bird is clean when it causes a fruit to fall from a tree by pecking at it, though things eaten by crows and other birds are considered unclean. And the mouth of a woman is clean for kissing and such like things at the time of sexual intercourse. Vatsyayana moreover thinks that in all these things connected with love, everybody should act according to the custom of his country, and his own inclination.
There are also the following verses on the subject.
"The male servants of some men carry on the mouth congress with their masters. It is also practised by some citizens, who know each other well, among themselves. Some women of the harem, when they are amorous, do the acts of the mouth on the yonis of one another, and some men do the same thing with women. The way of doing this (_i.e._, of kissing the yoni) should be known from kissing the mouth. When a man and woman lie down in an inverted order, _i.e._, with the head of the one towards the feet of the other and carry on this congress, it is called the "congress of a crow."
For the sake of such things courtezans abandon men possessed of good qualities, liberal and clever, and become attached to low persons, such as slaves and elephant drivers. The Auparishtaka, or mouth congress, should never be done by a learned Brahman, by a minister that carries on the business of a state, or by a man of good reputation, because though the practice is allowed by the Shastras, there is no reason why it should be carried on, and need only be practised in particular cases. As for instance, the taste, and the strength, and the digestive qualities of the flesh of dogs are mentioned in works on medicine, but it does not therefore follow that it should be eaten by the wise. In the same way there are some men, some places and some times, with respect to which these practices can be made use of. A man should therefore pay regard to the place, to the time, and to the practice which is to be carried out, as also as to whether it is agreeable to his nature and to himself, and then he may or may not practise these things according to circumstances. But after all, these things being done secretly, and the mind of the man being fickle, how can it be known what any person will do at any particular time and for any particular purpose.
[Footnote 39: This practice appears to have been prevalent in some parts of India from a very ancient time. The "Shushruta," a work on medicine some two thousand years old, describes the wounding of the lingam with the teeth as one of the causes of a disease treated upon in that work. Traces of the practice are found as far back as the eighth century, for various kinds of the Auparishtaka are represented in the sculptures of many Shaiva temples at Bhuvaneshwara, near Cuttack, in Orissa, and which were built about that period. From these sculptures being found in such places, it would seem that this practice was popular in that part of the country at that time. It does not seem to be so prevalent now in Hindustan, its place perhaps is filled up by the practice of sodomy, introduced since the Mahomedan period.]