仁王護國般若經疏 2.14

2.14

問：若皆羅漢，前已辨竟，今何更明？答：以菩薩形無定準，或同凡像、或同二乘，若不別明，恐於實混濫，庶幾貴小乘者知大士德齊羅漢，取名相者悟知菩薩道越凡夫，故更別說也。

Question: If all are arhats, this was already distinguished earlier; why clarify it again now? Answer: Because the bodily manifestations of bodhisattvas have no fixed standard—sometimes resembling ordinary persons, sometimes resembling the two vehicles. If they were not separately clarified, it is feared there would be confusion with the actual [śrāvakas]. It is hoped that those who value the Hīnayāna will know that the virtues of the great personages equal those of the arhats, and that those who grasp at names and characteristics will awaken and know that the bodhisattva's path surpasses ordinary beings; therefore they are spoken of separately again.