حَدَّثَنَا أَبُو عَاصِمٍ، عَنْ عُمَرَ بْنِ سَعِيدِ بْنِ أَبِي حُسَيْنٍ، عَنِ ابْنِ أَبِي مُلَيْكَةَ، عَنْ عُقْبَةَ بْنِ الْحَارِثِ، قَالَ صَلَّى أَبُو بَكْرٍ ـ رضى الله عنه ـ الْعَصْرَ، ثُمَّ خَرَجَ يَمْشِي فَرَأَى الْحَسَنَ يَلْعَبُ مَعَ الصِّبْيَانِ، فَحَمَلَهُ عَلَى عَاتِقِهِ وَقَالَ بِأَبِي شَبِيهٌ بِالنَّبِيِّ لاَ شَبِيهٌ بِعَلِيٍّ‏.‏ وَعَلِيٌّ يَضْحَكُ‏.‏
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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 Messenger (ﷺ) whose face was glittering with happiness, for whenever Allah's Messenger (ﷺ) 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."