大般涅槃經集解 4.27

4.27

案道生曰：去己所封，入佛化也。僧亮曰：從此三界之彼佛境，譬造他國也。僧宗曰：涅槃於生死為他，行人標心仰求，故言遠至。此乃因中說果，必至者也。智秀曰：生善之境是出惑之域，故言他也。法智曰：正道於耶道：為他也。

Daosheng notes: Leaving what one is bound to and entering the Buddha's conversion. Sengliang notes: Going from this triple realm to that realm of the Buddha is likened to reaching another country. Sengzong says: Nirvāṇa is 'other' in relation to saṃsāra; the practitioner directs his mind to seek it with reverence, hence it is said to travel far. This is speaking of the effect within the cause; one is certain to arrive. Zhixiu says: The realm where goodness is generated is the territory where delusion is transcended; hence it is called 'other'. Fazhi says: The correct path is 'other' in relation to the heterodox path.