Salman and director Kabir Khan found Adnan apt for "Bhardo Jholi" and the 41-year-old singer-composer cannot be more grateful to them.
"It was a challenge to sing this song. But it was a great experience. I have heard lot of qawwalis but I hate imitating. It was a different experience but I enjoyed it," Adnan told reporters here at a film's promotional event of the film.
"I have friendship.. Relationship with them. I have done this out of love. I am grateful to Salman and Kabir," the singer said.
"The trailer has got phenomenal response. I hope people will like the qawwali song as well," Adnan said.
Also starring Kareena Kapoor Khan and Nawazuddin Siddiqui, "Bajrangi Bhaijaan" is set for an Eid release on July 15.
