Vidura said "I will describe to you all the acts of creatures from the very beginning. In the beginning it lives in the mixture of blood and semen. Then it grows little by little. Then on the expiration of the fifth mouth it puts on a shape.
विदुर उवाच जन्मप्रभृति भूतानां क्रिया सर्वोपलक्ष्यते। पूर्वमेवेह कलिले वसते किंचिदन्तरम्॥