When two nonmetallic-sheathed cables (Type NM-B) enter a box, is it permitted to bring both of the bare equipment grounding conductors directly to the grounding terminal of a receptacle, using the terminal as a splice point?

Not permitted

Explanation:

It's totally unacceptable to bring both of the bare equipment grounding conductor directly with the grounding terminal of a receptacle because of grounding connection removal and receptacle.

When circuit conductors are terminated on equipment within a metal box, the equipment grounding conductor associated with those circuits must be connected to box to avoid unnecessary discharge of current.