[534] And what, bhikkhus, is the nutriment (āhāra) for the arising of the unarisen equanimity factor of awakening (upekkhā-sambojjhaṅga), or for the development and fulfillment of the arisen equanimity factor of awakening? There are, bhikkhus, dhammas that serve as the basis for the equanimity factor of awakening: frequently giving careful attention (yoniso manasikāra) to them — this is the nutriment for the arising of the unarisen equanimity factor of awakening, or for the development and fulfillment of the arisen equanimity factor of awakening.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.