Drupad secretly conducted a Yagna so that he can get a son who will kill Dronacharya.
A strong and handsome man occurred from the fire and the fire god told "he will kill the Dronacharya. His name will be Dhrishtdumn".
As the boy came out of the fire the fire god spoke again "She will be the cause of destruction of Kaurava. Her name will be Draupadi."
The very next second a bright and glorious girl came out of fire.
Drupad was full of joy for the two children he got from the fire god.