宋高僧傳 21.26

21.26

系曰：僵屍累足，於事一同；立逝坐亡，為修三昧。此者頭搘厚載，履蹈青冥，逆恒理以難知，諒是人而不測。若斯倒置，振古一人。其妹尼之攘也，若屈平為女𡡓之罵焉。如幻之功，善權大矣。或曰：「淮西之役，《唐書》胡弗載隱峯飛錫解陣邪？」通曰：「小說所傳，或得其實。是故《春秋》一經，五家作傳，可得同乎？」

The appraisal says: A rigid corpse with feet crossed is uniform in practice; to die standing or sitting is through the cultivation of samādhi. But in this case, his head supported the heavy earth while his feet trod the azure heavens—reversing the constant principle, he was difficult to comprehend, truly an unfathomable person. Such an upside-down departure has happened to only one person in all antiquity! The nudging by his nun sister was like Qu Ping being scolded by his elder sister. The power of illusion-like action—how great is its skillful means! Someone asked, "Why is Yinfeng's flight of the staff to dissolve the battle array not recorded in the Tang History's account of the Huaixi campaign?" The Commentator says: "What is transmitted in minor records may well preserve the truth. For this reason, the single classic of the Spring and Autumn Annals has five commentaries—could they possibly be identical?"