法華玄論 8.113

8.113

問：若以三界及二乘為五百者，度三界及二乘地應至佛道，此譬以寶所喻佛道故也。

Question: If the three realms and the two vehicles are taken as the five hundred [yojanas], then upon crossing the stages of the three realms and the two vehicles, one should reach the Buddha path, because this parable uses the place of jewels as an analogy for the Buddha path.