Superstar Rajinikanth has wrapped up shooting his portion in the Mumbai schedule of upcoming Tamil gangster drama "Kaala", a source said."Rajini sir has completed his portion and is expected to return to Chennai this week. He shot non-stop over the last two weeks. The rest of the team will shoot for another week," a source from the film's unit told IANS.In the second schedule of the film, the team will shoot in a specially erected Dharavi set in Chennai."Rajini sir plays a slum lord. Originally, the plan was to shoot in real Dharavi, but we realised it would be impossible. Hence, an exhaustive set was built in Chennai to shoot major portion of the film," the source added.Being directed by Pa. Ranjith, the film also stars Nana Patekar, Huma Qureshi, Anjali Patil, Samuthirakani and Pankaj Tripathi.The project marks the second time collaboration of Ranjith and Rajinikanth after last year's "Kabali".Dhanush is bankrolling the film, and he is rumoured to be playing a cameo in the film.