It took the production team over 150 people to light the diyas and keep them burning throughout the shoot of "Jalte diye", which was released on Wednesday, read a statement.
"Sooraj (Barjatya) undertook extensive measures to bring in a royal look to the song. Nearly 150 crew members were present to make sure that the diyas stayed lit," a spokesperson of the film said in a statement.
"Prem Ratan Dhan Payo", which brings together Bollywood's once indomitable team of Salman and Barjatya after 16 years, also stars Sonam Kapoor, Neil Nitin Mukesh and Anupam Kher in key roles.
The film is set to release on November 12, a day after the festival of lights - Diwali.