Riteish, who welcomed his first child with wife Genelia Deshmukh in November 2014, took to Twitter on Friday, to share his "magical" moment with his fans.
"What a start to 2016 - My son looks at me and calls out 'Baba' for the first time. #magical," Riteish tweeted.
On the films front, he will be seen in "Bank Chor", "Great Grand Masti" and "Housefull 3".