Narrated 'Abdullah bin Ka'b: I heard Ka'b bin Malik talking after his failure to join (the Ghazwa of) Tabuk. He said, "When I greeted Allah's Apostle whose face was glittering with happiness, for whenever Allah's Apostle was happy, his face used to glitter, as if it was a piece of the moon, and we used to recognize it (i.e. his happiness) from his face."
— Sahih Bukhari, Volume 4, Book 56: Virtues and Merits of the Prophet (pbuh) and his Companions, Hadith #756
Narrated 'Abdullah bin Ka'b: I heard Ka'b bin Malik talking after his failure to join (the Ghazwa of) Tabuk. He said, "When I greeted Allah's Apostle whose face was glittering with happiness, for whenever Allah's Apostle was happy, his face used to glitter, as if it was a piece of the moon, and we used to recognize it (i.e. his happiness) from his face."
This hadith is from the book of Virtues and Merits of the Prophet (pbuh) and his Companions in Sahih Bukhari, compiled by Imam al-Bukhari. It is hadith number 756 in book 56 of volume 4.
