法華論疏 3.137

3.137

實無乘異，而信三乘異，故名顛倒。二者實無世間涅槃異，無異謂異，故名顛倒。三者實無彼此身異，無異謂異故，故名顛倒。

There is truly no vehicle difference, yet believing in the difference of the triyāna is therefore called inverted. Second, there is truly no difference between the worldly and nirvāṇa; considering difference where there is no difference is therefore called inverted. Third, there is truly no difference between self and other bodies; considering difference where there is no difference is therefore called inverted.