Mumbai -- National Award winning multilingual actor Mohanlal, who is debuting in Bollywood with his guest appearance in Tezz, said that he has agreed to do the film only for director Priyadarshan. The Ajay Devgn-Kangna Ranaut starrer film will be the 43rd film of the duo together. This film Tezz just happened. I have a special appearance in the film and I did it only for Priyan. This is my 43rd film with him, the veteran actor said. He informed that he used to ask the talented filmmaker always that when they will do a Hindi film together. So one day he suddenly called me and said 'Come and do a film with me'. This started as a joke. Then I said, 'If you have a role, I will come and do it', he added.