The mahamantra is ‘the supreme mantra’, the mantra by chanting which every living being attains the highest benefit:
hare krishna hare krishna krishna krishna hare hare
hare rama hare rama rama rama hare hare
The mahamantra was first distributed broadly by Sri Chaitanya Mahaprabhu, who taught that chanting the Holy Names is the ideal way to develop divine love for the Supreme (Sri Krishna-prema). Why?