Since Tadatsune's troops had been exhausted from the long battle, he entered into priesthood with a posthumous Buddhist name Tsuneyasu in Spring of 1031, and then surrendered himself to Yorinobu with his two children and his followers.
長期にわたる合戦で忠常の軍は疲弊しきっており、長元4年（1031年）春に忠常は出家して常安と称し、子2人と従者をつれて頼信のもとへ出頭して降伏した。