Sahih Muslim 1060
صحيح مسلم#1060Sahihحَدَّثَنَا خَلَفُ بْنُ هِشَامٍ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ إِنِّي لاَ آلُو أَنْ أُصَلِّيَ بِكُمْ كَمَا رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يُصَلِّي بِنَا . قَالَ فَكَانَ أَنَسٌ يَصْنَعُ شَيْئًا لاَ أَرَاكُمْ تَصْنَعُونَهُ كَانَ إِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ انْتَصَبَ قَائِمًا حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ . وَإِذَا رَفَعَ رَأْسَهُ مِنَ السَّجْدَةِ مَكَثَ حَتَّى يَقُولَ الْقَائِلُ قَدْ نَسِيَ .
Thabit reported it on the authority of Anas:While leading you in prayer I do not shorten anything in the prayer. I pray as I saw the Messenger of Allah (ﷺ) leading us. He (Thabit) said: Anas used to do that which I do not see you doing; when he lifted his head from bowing he stood up (so long) that one would say: He has forgotten (to baw down in prostration). And when he lifted his head from prostration, he stayed in that position, till someone would say: He has forgotten (to bow down in prostration for the second sajda)
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: 4:222