The Book of Mosques and Places of Prayer
وَحَدَّثَنَاهُ أَبُو سَعِيدٍ الأَشَجُّ، حَدَّثَنَا حَفْصٌ، - يَعْنِي ابْنَ غِيَاثٍ - حَدَّثَنَا خَالِدٌ الْحَذَّاءُ، بِهَذَا الإِسْنَادِ وَزَادَ قَالَ الْحَذَّاءُ وَكَانَا مُتَقَارِبَيْنِ فِي الْقِرَاءَةِ .This hadith has been narrated with the same chain of transmitters, but al-Hadra' made this addition:" They both were equal in recitation
From Sahih Muslim, whose reports the scholars accept as authentic.