法華玄論 7.8

7.8

Answer: The parable of entrusting the wealth, advancing does not yet reach the one vehicle, and receding is again not the Tripiṭaka [teaching]; being both a distinct teaching and a distinct period, it is fitting to open it as one. Calling the son and reaching him, and instructing him to be a laborer, involve neither two teachings nor two periods, so they should not be opened as two.