The Kama Sutra of Vatsyayana

The Kama Sutra (alternative spellings: Kamasutram or
simply Kamasutra), is an ancient Indian text widely considered to be the
standard work on human sexual behavior in Sanskrit literature written by the
Indian scholar Vatsyayana. A portion of the work consists of practical advice on
sex. Kama means sensual or sexual pleasure, and sutra are the
guidlines of yoga, the word itself means thread in Sanskrit.

The Kama Sutra is the oldest and most notable of a group of texts
known generically as Kama Shastra (Sanskrit: Kama Shastra).
Traditionally, the first transmission of Kama Shastra or "Discipline of
Kama" is attributed to Nandi the sacred bull, Shiva's doorkeeper, who was moved
to sacred utterance by overhearing the lovemaking of the god and his wife
Parvati and later recorded his utterances for the benefit of mankind.

Historian John Keay says that the Kama Sutra is a compendium that was
collected into its present form in the second century CE.

— Excerpted from Wikipedia, the free encyclopedia.