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The Uttara Purana of the Mahapurana
"Even the remaining part belongs to me, therefore he also did not experience it." Thus saying, she sent her younger son back to protect the city, and taking her elder son with her, she went to the city of Rathnupura by the aerial path. Knowing from the spies who roamed her country, she was aware of the great brilliance of Amitatejas. With great splendor, she went to meet him, and pleased with him, she entered her city, which was adorned with high flags and arches.
Amitatejas, the lord of the Vidyadharas, welcomed them as guests, and knowing the reason for their arrival, he sent a messenger named Marichi to Ashanighosha, the son of Indraashani. He spoke harsh words to the messenger. The messenger returned and reported all the words to Amitatejas. Hearing them, Amitatejas, in consultation with his ministers, resolved to destroy Ashanighosha, who was intoxicated with pride. With great respect, he gave his brother-in-law, who had a lofty ambition, the three traditional arts of warfare, namely, Yuddhavirya, Praharanavaran, and Bandhamochan, for the destruction of the enemy.
And he told Shrivijaya, the king of Podanapura, to go against the arrogant enemy with his five hundred sons, including Rashmivega, Suvega, and others. And he himself, along with his elder son, Sahasrarashmi, went to the foot of the great stupa of Sanjayanta, near the Himanta mountain, the place where the Vidyadharas perfected their arts, to perfect the art of Mahajvala, which could destroy all arts.
When Ashanighosha heard that Shrivijaya was coming to battle with Rashmivega and others, he sent out his sons, Sughosha, Shataghosha, Sahasragosha, and others, in anger. All his sons, grandsons, and others fought for fifteen days and were finally defeated. When Ashanighosha heard this news, he was consumed with anger and went to fight himself, his pronouncements all announcing his own destruction.
In the battle, Shrivijaya struck Ashanighosha in two places to destroy him. Ashanighosha, however, created two forms of himself by the art of Bhramari. Shrivijaya struck them both in two places to destroy them, but Ashanighosha created four forms of himself. Thus, the battle became a game of illusions, with Ashanighosha constantly multiplying himself.