Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
ibnmajah:474Abū Bakr b. Abū Shaybah And ʿAlī b. Muḥammad > Wakīʿ > al-Aʿmash > Ibrāhīm > al-Aswad > ʿĀʾishah

"The Messenger of Allah would fall asleep until he was breathing deeply, then he would get up and offer the prayer, and he did not perform ablution." (Hasan) Tanafisi said: "Wakiʿ said: 'She meant while he was prostrating (he would sleep).'"  

ابن ماجة:٤٧٤حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ وَعَلِيُّ بْنُ مُحَمَّدٍ قَالاَ حَدَّثَنَا وَكِيعٌ حَدَّثَنَا الأَعْمَشُ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

كَانَ رَسُولُ اللَّهِ ﷺ يَنَامُ حَتَّى يَنْفُخَ ثُمَّ يَقُومُ فَيُصَلِّي وَلاَ يَتَوَضَّأُ قَالَ الطَّنَافِسِيُّ قَالَ وَكِيعٌ تَعْنِي وَهُوَ سَاجِدٌ  


See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:25036Wakīʿ > al-Aʿmash > Ibrāhīm > al-Aswad > ʿĀʾishah

[Machine] The Prophet ﷺ used to sleep until he snores, then he would get up and offer prayer without performing ablution.  

أحمد:٢٥٠٣٦حَدَّثَنَا وَكِيعٌ حَدَّثَنَا الْأَعْمَشُ عَنْ إِبْرَاهِيمَ عَنِ الْأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

كَانَ النَّبِيُّ ﷺ يَنَامُ حَتَّى يَنْفُخَ ثُمَّ يَقُومُ فَيُصَلِّي وَلَا يَتَوَضَّأُ