Ludhiana, Oct. 20 Diwali, the biggest festival of lights, is a day when all Hindu families celebrate the return of Lord Rama from 14-year exile to Ayodhaya, his kingdom, as mentioned in Ramayana. It is said people lit earthen lamps using Ghee, clarified butter.
Since ancient time, the devotees of Lord Rama lit earthen lamps, called Diyas in local parlance, and celebrate Diwali.
The tradition has been to light earthen lamps which is considered auspicious.