In the episode, to be aired Saturday on Star plus, the duo will perform on songs "O Mere Khuda" and "Aa Khushi Se Khudkhushi Karle" in the Khallas round of the show.
After the performance, Sushant, 24, claimed that he was keen to perform with Rakhi ever since he saw her "Pardesia" music video.
Rakhi also said that they bonded a lot with this performance.