Ibn 'Abbaas (may Allah be pleased with him) reports:
"Once Messenger of Allah ﷺ slept and began snoring. It was, the nature of Messenger of Allah ﷺ that he snored, when he slept. Bilaal (may Allah be pleased with him) gave the call to prepare for salaah. Messenger of Allah ﷺ awakened and performed the salaah. He did not perform the wudu". This hadith has a detailed incident

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ: حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، قَالَ: حَدَّثَنَا سُفْيَانُ، عَنْ سَلَمَةَ بْنِ كُهَيلٍ، عَنْ كُرَيْبٍ، عَنِ ابْنِ عَبَّاسٍ: أَنَّ رَسُولَ اللهِ ﷺ، نَامَ حَتَّى نَفَخَ، وَكَانَ إِذَا نَامَ نَفَخَ، فَأَتَاهُ بِلالٌ فَآذَنَهُ بِالصَّلاةِ، فَقَامَ وَصَلَّى وَلَمْ يَتَوَضَّأْ وَفِي الْحَدِيثِ قِصَّةٌ.