"To die, to sleep–to sleep, perchance to dream–ay, there's the rub..." is from which of Shakespeare's play?

“To die, to sleep – to sleep, perchance to dream – ay, there’s the rub, for in this sleep of death what dreams may come…” is a quote from William Shakespeare's dramatic play "Hamlet" (1602).

This is said by Hamlet to himself when he thinks he is alone. He is asking himself if it is better to give up and die rather than facing his troubles but he is frightened that he will dream when he is dead and never get any peace from his earthly troubles. The speech starts with the even more famous words “To be or not to be…” which is the ‘should I live or die?’ part.