During the Mahabharata, it is assumed that Draupadi tied a rakhi on Lord Krishna's hand when he had hurt his finger while utilizing his Sudarshan chakra against the King Shishupalal. While Lord Krishna's wrist was percolating, Draupadi ripped a portion of fabric from her sari and secured it near his hand. This is another tale that describes the celebration of Raksha Bandhan is very auspicious that comes with several such tales that make our beliefs even stronger.