Note 15 — Chapter XVII · SANKASYA. BUDDHA’S ASCENT TO AND DESCENT FROM THE TRAYASTRIMSAS HEAVEN, AND OTHER LEGENDS.
James Legge translation
(15) Has always been translated “heretical teachers;” but I eschew the terms heresy and heretical. The parties would not be Buddhists of any creed or school, but Brahmans or of some other false doctrine, as Fâ-Hien deemed it. The Chinese term means “outside” or “foreign;”—in Pâli, anna-titthiya,=“those belonging to another school.”