Al-Aslamiyyah said:

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.

حَدَّثَنَا ابْنُ السَّرْحِ، وَسَعِيدُ بْنُ مَنْصُورٍ، وَمُسَدَّدٌ، قَالُوا حَدَّثَنَا سُفْيَانُ، عَنْ مَنْصُورٍ الْحَجَبِيِّ، حَدَّثَنِي خَالِي، عَنْ أُمِّي، صَفِيَّةَ بِنْتِ شَيْبَةَ قَالَتْ سَمِعْتُ الأَسْلَمِيَّةَ، تَقُولُ قُلْتُ لِعُثْمَانَ مَا قَالَ 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 .