The duo will be seen performing to the song 'Mashallah', which was picturised on Salman and Katrina Kaif in the hit spy thriller 'Ek Tha Tiger'.
Many felt that Elli, who made her Bollywood debut with "Mickey Virus", was one of Salman's favourite contestants on the show. He often referred to her as 'paanch saal pehle ki Katrina Kaif'.
Though she spoke in broken Hindi, Elli managed to grasp songs like 'Tere bina jiya jaaye na' and 'Hum dil de chuke sanam' on the show. Those who have followed the show must have seen her dedicating the songs to Salman, whom she often referred to as "Salmanji" or "Salman jaan".
The finale won't be the first time that Salman and Elli will be seen dancing together. The two jived on 'Sathiya ye tune kya kiya' after Elli's eviction from the show on November 23.
The other performances on the finale night will be of Armaan Kohli, Pratyusha Banerjee and Kamya Punjabi.
'Bigg Boss Saath 7' airs on Colors.