Ayushmann Khurrana took to Instagram on Saturday to celebrate the sixth anniversary of his film 'Dum Laga Ke Haisha'. Sharing a video montage from the film, he wrote, "Films like #DumLagaKeHaisha have been the voice of my beliefs and these have also enabled me to write my own destiny in...industry." He added, "It'll always be...super special one for my career."