Sunan Ibn Majah 475
سنن ابن ماجه#475Sahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَامِرِ بْنِ زُرَارَةَ، حَدَّثَنَا يَحْيَى بْنُ زَكَرِيَّا بْنِ أَبِي زَائِدَةَ، عَنْ حَجَّاجٍ، عَنْ فُضَيْلِ بْنِ عَمْرٍو، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ نَامَ حَتَّى نَفَخَ ثُمَّ قَامَ فَصَلَّى .
It was narrated from 'Abdullah that:The Messenger of Allah slept until he was breathing deeply, then he got up and prayed
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:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiHasan
In-book reference: 1:209