We have seen Sanjay Dutt in a cameo role of Ajay Devgn's film Raju Chacha in 2000. Then, the two actors were seen working together in the multi-starrer movie LOC Kargil and All The Best in 2009. Both Sanjay and Ajay share a great rapport so Sanjay signed All The Best for Ajay. Devgn returned this favor by giving enough dates for Dutt's home production Rascals.
On the other hand, we will see Sanjay turning God for Ajay Devgn's movie Toonpur Ka Superrhero. He immediately agreed to do the voice over for God in Toonpur Ka Superrhero when Ajay came with the offer.
This is just one of the characters of the movie and the director Kireet Khurana wanted someone very impressive for that voice.
Both Ajay and Sanjay were shooting together, the director asked Ajay if Sanjay would do the voice over. Hearing this Dutt said that he can do anything for Ajay. So this is the kind of friendship they share!