[598] "And how, bhikkhus, is the liberation of mind (cetovimutti) by compassion developed — having what destination, what culmination, what fruit, what final goal? Here, bhikkhus, a bhikkhu develops the awakening factor of mindfulness accompanied by compassion … he develops the awakening factor of equanimity accompanied by compassion, dependent on seclusion, dependent on dispassion, dependent on cessation, maturing in relinquishment (vossagga). If he wishes: 'May I dwell perceiving the repulsive in the unrepulsive,' he dwells therein perceiving the repulsive. … If he wishes: 'Avoiding both the unrepulsive and the repulsive, may I dwell equanimous, mindful and clearly comprehending,' he dwells therein equanimous, mindful and clearly comprehending. Or else, with the complete transcending of perceptions of form, with the passing away of perceptions of sensory impingement, with non-attention to perceptions of diversity, [aware that] 'space is infinite,' he enters and dwells in the base of the infinity of space (ākāsānañcāyatana). Bhikkhus, I declare the liberation of mind by compassion to have the base of the infinity of space as its culmination — for a wise bhikkhu here who has not penetrated to a higher liberation."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.