Detailed at SN 48.31–40.

Also at MN 137:8.1, MN 140:10.1 and AN 3.61:12.1. Outside of this context, upavicāra is only found in AN 6.52, where women are “preoccupied” with adornments and thieves are “preoccupied” with a hiding place.

MN 137:9.1.