Prince Umayado played an active role in the introduction of Buddhism, writing the "Sankyogisho" commentaries on the three sutras of "Hokke-kyo" (the Lotus Sutra), "Yuimagyo" (Vimalakirti Sutra) and "Shomangyo" (Srimala Sutra) and the second article of the Seventeen-Article Constitution, which states, "Sincerely revere the three treasures; the three treasures are the Buddha, his laws and the priesthood".
厩戸皇子は『法華経』・『維摩経』・『勝鬘経』の三つの経の解説書（『三経義疏』）を書き、『十七条憲法』の第二条に、「篤（あつく）く三宝を敬へ三寶とは佛（ほとけ）法（のり）僧（ほうし）なり」（「篤敬三寶三寶者佛法僧也」）と書くなど、仏教の導入に積極的な役割を果たした。