法華義疏 8.260

8.260

尋佛應世感見不同者，猶由眾生行有厚薄之異，故覩接致久近之差。一百三十劫，上品人也。一百八十劫，中品人也。於昔無量劫，下品人也。略舉三品不同，則略攝感應義。

When we examine the differences in the responsive sightings of a Buddha's appearance in the world, they are due to the differences in whether sentient beings' practice is deep or shallow; hence there arises a disparity in how long or short an interval passes before they behold him. One hundred and thirty kalpas is for people of superior capacity; one hundred and eighty kalpas is for people of middling capacity; and 'in the past, immeasurable kalpas' is for people of inferior capacity. By briefly mentioning the differences of these three capacities, the principle of sympathetic resonance (ganying) is briefly encompassed.