Sahih Muslim 526
Sahih Muslim · Book 5: The Book of Mosques and Places of Prayer · Changing the qiblah from Al-Quds (Jerusalem) to the Ka`bah
Ibn 'Umar reported:
حَدَّثَنِي سُوَيْدُ بْنُ سَعِيدٍ ، حَدَّثَنِي حَفْصُ بْنُ مَيْسَرَةَ ، عَنْ مُوسَى بْنِ عُقْبَةَ ، عَنْ نَافِعٍ ، عَنِ ابْنِ عُمَرَ ، وَعَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ ، عَنِ ابْنِ عُمَرَ ، قَالَ بَيْنَمَا النَّاسُ فِي صَلاَةِ الْغَدَاةِ إِذْ جَاءَهُمْ رَجُلٌ . بِمِثْلِ حَدِيثِ مَالِكٍ .
As the people were engaged in the morning prayer a man came to them. The rest of the hadith is the same.