"Manyoshu" and "Kaifuso" contain his death poem, but Noriyuki KOJIMA and Susumu NAKANISHI advocated an opinion that it was created not by the prince, but by posterity, which had compassion on him.
『万葉集』と『懐風藻』に辞世が残っているが、小島憲之や中西進らによって皇子の作ではなく、彼に同情した後人の仮託の作であろうとの理解がなされている。