If this has been posted before, I'm sorry.
In Guy Ritchie's film, Snatch, Benicio Del Toro hosts a diamond heist and at the main point of the heist, Benicio Del Toro holds and beats an employee while asking, "Where's the stone?"
In infinity War, when Thanos has his foot on the chest of the Collector (Benicio Del Toro, roughly 48:40 into the movie) Thanos asks, "Where 's the stone?" in a very similar tone of voice.
Either it's a coincidence or it's one of the best shout outs ever!!