RamanujaThe second occassion when Lord Varadaraja of Kachipuram proved the greatness of Ramanuja:

When hot debates on tatvam waged between Ramanuja and Yajnamurthi and the latter was scoring points for victory, The Lord Himself appeared in Ramanuja’s dream and suggested that certain Vedic passages could be quoted which would level the opponent to the ground, defeating him. As said by the Lord, the next morning, the opponent was thoroughly vanquished.