When we are talking about the great qawwalis of bollywood then the name of qawwali from Dharma "Isharon ko agar samjho" is very essential to take. First of all the qawwali is picturised on the vamp in the film Bindu and Pran who plays the lead role in the film.The main charm of the song is that it is in the question answer form with great poetic rhyming. Bindu knows some Raaz (secret) of Pran and threatens to open that secret in the party still pran says "Isharon ko agar samjho raaz ko raaz rahene do" but bindu denies.The most charming thing is that their whole conversation is in qawwali form.The great pronunciations skills of Mhd. Rafi and Asha Bhonsle adds more charm to the song.