Sahih Muslim 1696
صحيح مسلم#1696Sahihوَحَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنِ النُّعْمَانِ بْنِ سَالِمٍ، عَنْ عَمْرِو بْنِ أَوْسٍ، عَنْ عَنْبَسَةَ بْنِ أَبِي سُفْيَانَ، عَنْ أُمِّ حَبِيبَةَ، زَوْجِ النَّبِيِّ صلى الله عليه وسلم أَنَّهَا قَالَتْ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَا مِنْ عَبْدٍ مُسْلِمٍ يُصَلِّي لِلَّهِ كُلَّ يَوْمٍ ثِنْتَىْ عَشْرَةَ رَكْعَةً تَطَوُّعًا غَيْرَ فَرِيضَةٍ إِلاَّ بَنَى اللَّهُ لَهُ بَيْتًا فِي الْجَنَّةِ أَوْ إِلاَّ بُنِيَ لَهُ بَيْتٌ فِي الْجَنَّةِ " . قَالَتْ أُمُّ حَبِيبَةَ فَمَا بَرِحْتُ أُصَلِّيهِنَّ بَعْدُ . وَقَالَ عَمْرٌو مَا بَرِحْتُ أُصَلِّيهِنَّ بَعْدُ . وَقَالَ النُّعْمَانُ مِثْلَ ذَلِكَ .
Umm Habiba, the wife of the Messenger of Allah (ﷺ), reported Allah's Messenger (ﷺ) as saying:If any Muslim servant (of Allah) prays for the sake of Allah twelve rak'ahs (of Sunan) every day, over and above the obligatory ones, Allah will build for him a house in Paradise, or a house will be built for him in Paradise; and I have not abandoned observing them after (hearing it from the Messenger of Allah). (So said also 'Amr and Nu'man)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 6:126