涅槃門(niè pán mén) “the gate of nirvāṇa”
not found at HD. 5.1210.; DK. 6.1182d(無量義經);
Ten. 154a22.如四種藥，即是空、無相、無願、涅槃門(p);
K. 136.13.-nirvāṇa-dvāra~; Z. 85c9.泥洹門; not found at L. 20b24