What is the ruling on slaughtering someone who completely abandons prayer, and does food cooked with meat from a forbidden slaughtered animal share the same ruling?

The ruling on the slaughtered animal of one who abandons prayer varies depending on the reason for abandonment. If it is due to denial (of its obligation), then consuming their slaughtered animal is impermissible because it is impure carrion. If it is due to laziness, then scholars have differed on its ruling.