so your solution to defeating a grenade is to dig explosive out of it?

While I have no evidence to support that claim I have seen someone putting live ammunition in a pot and making it cook off. That experiment clearly showed that cartridges are only really dangerous when used in a firearm. I expect the physics to be very much the same here.

then your expectations aren’t worth shit, because one is high explosive that does not require confinement to detonate, because reaction zone propagates through supersonic mechanical shock, and the other one is low explosive that has burn rate dependent on pressure, because it burns on surface, which forms foam, which slows down heat transfer, then foam collapses with pressure increase which makes heat transfer faster, but it’s all subsonic. some of the smallest fragments might be stopped by a pot wall, if grenade is in the center, but if it’s close to one wall, then the wall itself would just generate more fragments

but you probably won’t have pot on hand, or realize what is going on in time, and you don’t know how much time is left because of manufacturing tolerances, and you probably don’t have grenade sumps in your living room, so better way would be preventing this situation in the first place, for example using laminated windows or not being a probable mafia target in sweden, if it’s practical. not by trying to cover grenade with a pot, because you just spend more time closer to grenade this way