Narrated Abu 'Is-haq:Al-Bara' was asked, "Was the face of the Prophet (as bright) as a sword?" He said, "No, but (as bright) as a moon."
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا زُهَيْرٌ، عَنْ أَبِي إِسْحَاقَ، قَالَ سُئِلَ الْبَرَاءُ أَكَانَ وَجْهُ النَّبِيِّ صلى الله عليه وسلم مِثْلَ السَّيْفِ قَالَ لاَ بَلْ مِثْلَ الْقَمَرِ.
Bukhari
Virtues and Merits of the Prophet (pbuh) and his Companions • Hadith 61