Honen regarded this as the most important vow of all and explained it by saying, 'Therefore, I declare that, of the 48 Vows, Nenbutsujo no gan (the vow to pass away peacefully and be reborn in Paradise through invocation of Amitabha) is the king of hongan.'
法然はこの願を最も重要な願ととらえ、『選択本願念仏集』において、「故知四十八願之中既以念仏往生之願而為本願中之王也」と解釈した。