Tonton Streaming Sanford and Son (1972) S1E9 - Coffins for Sale

Lamont purchases two coffins from an auction to try and get a profit if he sells them to a funeral parlor. In the process, Fred becomes paranoid by having the coffins in the house and refuses to sleep in the house with the coffins. Lamont doesn't think much of it, until he begins hearing strange noises at night.