The Prophet ﷺ went out from me, while he was happy, but he returned to me while he was sad. He said: I entered the Ka'bah, I know beforehand about my affair what I have come to know later I would not have entered it. I am afraid I have put my community to hardship.  

أَنَّ النَّبِيَّ ﷺ خَرَجَ مِنْ عِنْدِهَا وَهُوَ مَسْرُورٌ ثُمَّ رَجَعَ إِلَىَّ وَهُوَ كَئِيبٌ فَقَالَ إِنِّي دَخَلْتُ الْكَعْبَةَ وَلَوِ اسْتَقْبَلْتُ مِنْ أَمْرِي مَا اسْتَدْبَرْتُ مَا دَخَلْتُهَا إِنِّي أَخَافُ أَنْ أَكُونَ قَدْ شَقَقْتُ عَلَى أُمَّتِي  

I said to Uthman ibn Talhah al-Hajabi): What did the Messenger of Allah ﷺ say to you when he called you? He said: (The Prophet said:) I forgot to order you to cover the two horns (of the lamb), for it is not advisable that there should be anything in the House (the Ka'bah) which diverts the attention of the man at prayer. Ibn as-Sarh said: The name of my maternal uncle is Musafi' ibn Shaybah.  

لَكَ رَسُولُ اللَّهِ ﷺ حِينَ دَعَاكَ قَالَ إِنِّي نَسِيتُ أَنْ آمُرَكَ أَنْ تُخَمِّرَ الْقَرْنَيْنِ فَإِنَّهُ لَيْسَ يَنْبَغِي أَنْ يَكُونَ فِي الْبَيْتِ شَىْءٌ يَشْغَلُ الْمُصَلِّيَ قَالَ ابْنُ السَّرْحِ خَالِي مُسَافِعُ بْنُ شَيْبَةَ