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English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.