According to hospital sources, both the baby and the mother are doing fine.
Ajay and Kajol already have a daughter named Nysa. The arrival of a baby boy completes the family picture.
Friends from the film industry have started congratulating the couple.
Shahrukh Khan tweeted: “Bringing life on earth is the most beautiful gift of God.Allah bless Ajay & Kajol with happiness & health. son of a devgun wow masha allah,"
Priyanka Chopra wrote: “It’s amazing when a new life comes into the world.. Congrats Ajay and kajol on the birth of ur baby boy.”