عَنْ حَارِثَةَ بْنِ النُّعْمَانِ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((يَتَّخِذُ أَحَدُكُمُ السَّائِمَةَ فَيَشْهَدُ الصَّلَاةَ فِي جَمَاعَةٍ فَتَتَعَذَّرُ عَلَيْهِ سَائِمَتُهُ فَيَقُولُ لَوْ طَلَبْتُ لِسَائِمَتِي مَكَانًا هُوَ أَكْلَى مِنْ هَٰذَا، فَيَتَحَوَّلُ وَلَا يَشْهَدُ إِلَّا الْجُمُعَةَ، فَتَتَعَذَّرُ عَلَيْهِ سَائِمَتُهُ، فَيَقُولُ لَوْ طَلَبْتُ لِسَائِمَتِي مَكَانًا هُوَ أَكْلَى مِنْ هَٰذَا، فَيَتَحَوَّلُ فَلَا يَشْهَدُ الْجُمُعَةَ وَلَا الْجَمَاعَةَ فَيُطْبَعُ عَلَى قَلْبِهِ))
Iyas bin Abi Ramla Shami says: I was present with Sayyiduna Muawiyah (may Allah be pleased with him), and he asked Sayyiduna Zaid bin Arqam (may Allah be pleased with him): Were you present with the Messenger of Allah (peace and blessings be upon him) when two Eids were combined? He said: Yes, the Prophet (peace and blessings be upon him) performed the Eid prayer at the beginning of the day, and then, granting concession regarding Jumu'ah, he said: Whoever wishes to perform Jumu'ah may do so.