The Book of Mosques and Places of Prayer
وَحَدَّثَنَاهُ يَحْيَى بْنُ يَحْيَى، وَسَعِيدُ بْنُ مَنْصُورٍ، وَقُتَيْبَةُ بْنُ سَعِيدٍ، جَمِيعًا عَنْ أَبِي عَوَانَةَ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم وَلَمْ يَذْكُرْ " لاَ كَفَّارَةَ لَهَا إِلاَّ ذَلِكَ " .This hadith has been narrated by Qatada, but here no mention has been made of" There is no explation for it except this
From Sahih Muslim, whose reports the scholars accept as authentic.