法苑珠林 20.9

20.9

又決定毘尼經云。若能至心敬禮三十五佛。其人功德無量無邊。

Furthermore, the Viniścayavinaya-sūtra states: “If one is able to pay reverent homage to the thirty-five Buddhas with a sincere mind, that person's merit is immeasurable and boundless.”