The origin of the Bon-Odori, or Bon Dance, is described in the Ullambana Sutra of Buddhist scripture. It tells how Mauggallana (sometimes spelled Maudgalyana, and in the Japanese language called Mokuren), one of the ten disciples of Buddha, became aware of his mother's suffering in the inferno of the dead. He tried to relieve her hunger by offering her rice, but when she brought it to her lips it turned to fire. Mauggallana went to the Buddha for help and was advised for his mother's sake to give food-offerings to the bhikus (priests), on the fifteenth day of the seventh month, when they returned from the mountains after their long meditation during the rainy season. The spontaneous dance of joy following his mother's release from the torment of hell was the first Bon Dance. This ritual offering and festive celebration became an annual event.