涅槃门(niè pán mén) “the gate of nirvāṇa”
not found at HD. 5.1210.; DK. 6.1182d(无量义经);
Ten. 154a22.如四种药，即是空、无相、无愿、涅槃门(p);
K. 136.13.-nirvāṇa-dvāra~; Z. 85c9.泥洹门; not found at L. 20b24