Nichiren, who believed in the Lotus Sutra as the single most important sutra of Buddhism, criticized Buddhist sects that were not founded on the faith in the Lotus Sutra as denigrating the true teachings of Buddhism.
日蓮は、法華経を一乗とする立場から、法華経に依らない仏教宗派を謗法（誹謗正法の略）だとして批判した。