"Enter it in peace," Al-Suddi's interpretation is: the angels say this to them, "That is the Day of Eternity."
Yahya reported from Uthman, from Nafi, from Ibn Umar, who said: I heard the Messenger of Allah say: "When the people of Paradise enter Paradise and the people of the Fire enter the Fire, a caller shall proclaim: O people of Paradise, eternity and no death! And O people of the Fire, eternity and no death!"