The movie was premiered in Mumbai's Maratha Mandir and released simultaneously in 150 theatres across the country.

Before every shot, Prithviraj Kapoor (who played Jalaluddin Mohammad Akbar) would look into a full-length mirror. When director K Asif asked the reason for the odd behaviour, Kapoor said he did it to 'get under the skin of the character'.

K Asif took nine years to make Mughal-e-Azam. In 1952, Jhansi Ki Rani became India's first movie to be shot in technicolour. Asif wanted to remake his film entirely in colour too, but it is said the distributors lost patience and settled for shooting two songs and the climax of the film in technicolour. Some 85 per cent of the movie was filmed in black-and-white. In November 2004, the Indian Academy of Arts and Animation restored, colourised and re-released the film in 100 per cent colour. This is the first full feature-length movie to be coloured and re-released in theatres in the history of cinema. Some English films have been coloured but only released in the home video format.

The colour version of the film was the first Indian movie to be released in Pakistan after Indian movies were banned there after the 1965 war.

A chorus of 100 singers accompanied Mohammed Rafi in the song Ae Mohabbat Zindabad.

Pyar Kiya Toh Darna Kya was shot in Sheesh Mahal at a cost of Rs 10 lakh at a time when entire movies were made on that budget. Most thought financier Shapoorji Pallonji would go bankrupt filming this one song itself. The song was written and re-written more than a hundred times by lyricist Shakeel Badayuni before music director Naushad approved of it. To provide the reverbration effect in the song, Lata Mangeshkar recorded it in a bathroom.

The director had initially thought he would release Mughal-e-Azamin three languages - Hindi, Tamil and English. The Tamil version did so badly, Asif dropped the idea of dubbing it in English. Madhubala's heart condition did not allow her to sign any films after this one.

To ensure a life-like performance, the chains Madhubala wore in the movie were real. The actress nursed the bruises caused by the chains for days 2, 000 camels, 4, 000 horses and 8, 000 troops were used in the battle sequence, many of them were sought from the Indian Army through special permission from the Defence Ministry. The soldiers were from the Jaipur regiment.