 Kishore Kumar (qv) always asked for his payment in advance before  he rendered a song. But he made an exception this film. Neither did  he demand his payment in advance, nor did he ask for it even after  the song was recorded. When a shocked Rajesh Khanna (qv) asked him  why, Kishore Kumar (qv)s reply was that he had got a fresh lease  of life as a singer with _Aradhana (1969)_ (qv) and since this was  Rajesh Khanna (qv)s first film as producer, he had no right to  accept any money.