6.
The Discourse on Wise Attention
217.
"But, monks, for one attending wisely, the unarisen enlightenment factor of mindfulness arises, and the arisen enlightenment factor of mindfulness goes to fulfilment through development. Etc.
the unarisen enlightenment factor of equanimity arises, and the arisen enlightenment factor of equanimity goes to fulfilment through development."
The sixth.