Devakanya turned herself into Sariputra and, him into her, to let him under stand that focusing on an illusion of sex is a mistake and thinking that changing an illusion of a woman into an illusion of man is a mistake built on a mistake.
好讓舍利弗明瞭，執著於男女幻象已經是一種錯誤，再以分別心要「幻女」變成「幻男」才得成佛，更是錯上加錯。