That medicine or therapy by which a man acquires great
strength, becomes capable of copulating with a woman,
is liked by women and gets ample nourishment is known as
Vajikarana therapy and is the best promoter of strength and vigour.
The man of self-restraint should seek always to maintain his virility by means of virilification, as righteousness, wealth, affection and good repute are dependant on the maintenance of healthy manhood, which is a means of begetting a son in whom these qualities are based.