Sayyiduna Ibn Umar (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "On the Day of Resurrection, death will be brought in the form of a black-and-white ram and made to stand between Paradise and Hell. Then it will be said: O people of Paradise, do you recognise this? They will raise their necks and look. And it will be said: O people of Hell, do you recognise this? They too will raise their necks and look. Then it will be slaughtered, and then it will be said: O people of Paradise, it is eternity, there is no more death! And O people of Hell, it is eternity, there is no more death!"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13289