According
to Indian notion, this universe follows a cosmic law called
Rita. Each one's birth is supposed to reach the supreme
goal; meanwhile he must do the duty entrusted to him by his
nature i.e., to extend or perpetuate his race. In fact, Indian
tradition speaks of a son or progeny as one's own self-reborn
-atma vai putra namasi. The marriage was therefore designed
to get a progeny and not for mere sensual pleasures. This longing
for a progeny is held as one of primary desires of mankind by
Upanishads - 'Putraisana'. This paved way for the development
of Vajikarana branch of Ayurveda.
The
term vaja means both speed and semen. Thus this branch
of Ayurveda is designed to promote virility as well
as power, the term Vajikarana strictly from grammarian's
point of view, means making a man with some defect in his Sexual
system to total fitness and to enable him to acquire a healthy
progeny. In ancient days or as per Ayurvedic principles, it
was a routine procedure to take some aphrodisiac before understanding
and indulging in sexual intercourse. The idea underlying this
practice was to promote/ensure the quantity and quality of semen
along with the enjoyment of sexual bliss.