Musnad Ahmad 1302:14

Abu Mu'awiyah narrated to us, he said: Al-A'mash narrated to us, from Abu Salih, from 'Ata' ibn Yasar, from a man from the people of Egypt, from Abu al-Darda', he said: A man came to him and said: "What do you say about the saying of Allah: 'For them are glad tidings in the worldly life and in the Hereafter' [Yunus: 64]?" He said: "You have asked about something that I have not heard anyone ask about since a man asked the Messenger of Allah, peace and blessings of Allah be upon him, about it. He said: 'Their glad tidings in the worldly life is the righteous vision that the Muslim sees or is seen for him, and their glad tidings in the Hereafter is Paradise.'"