Musnad Ahmad 31:133

Yahya ibn Adam narrated to us, Abu Bakr ibn Ayyash narrated to us, from al-A’mash, from Abu Salih, from Abu Sa’id al-Khudri, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "You will surely see your Lord, the Almighty and Majestic." They said: "O Messenger of Allah, will we see our Lord?" He said: "Are you harmed in seeing the sun at midday?" They said: "No." He said: "And are you harmed in seeing the moon on the night of the full moon?" They said: "No." He said: "Then you will not be harmed in seeing Him, except as you are harmed in seeing those." Al-A’mash said: "You will not be harmed" means: You will not dispute.