《资治通鉴·隋纪·隋纪二》
治书侍御史柳又上奏恳切劝谏，文帝才不再坚持将那两人处死。
治书侍御史柳彧复上奏切谏，上乃止。
However, Guarding the Palace and Imperial Censor Liu made a passionate remonstrance, so Emperor Wen gave up on his conviction to execute those two.