During the reign of the Retired Emperor Gotoba, Shinano no Zenji Yukinaga, who got a reputation for his studies (…), wrote Heike Monogatari, and taught the tale to a vision-impaired man called Shobutsu in order to have him recite it.' (Section 226, Tsurezuregusa)
「後鳥羽院の御時、信濃前司行長稽古の譽ありけるが（中略）この行長入道平家物語を作りて、生佛といひける盲目に教へて語らせけり。」（徒然草226段）