Hadithcore
Sahih Muslim, 177 c
sahih

Masruq reported:

I asked 'A'isha if Muhammad (ﷺ) had seen his Lord. She replied: Hallowed be Allah, my hair stood on end when you said this, and he (Masruq) narrated the hadith as narrated above. The hadith reported by Diwud is more complete and longer.

حَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا إِسْمَاعِيلُ، عَنِ الشَّعْبِيِّ، عَنْ مَسْرُوقٍ، قَالَ سَأَلْتُ عَائِشَةَ هَلْ رَأَى مُحَمَّدٌ صلى الله عليه وسلم رَبَّهُ فَقَالَتْ سُبْحَانَ اللَّهِ لَقَدْ قَفَّ شَعْرِي لِمَا قُلْتَ ‏.‏ وَسَاقَ الْحَدِيثَ بِقِصَّتِهِ ‏.‏ وَحَدِيثُ دَاوُدَ أَتَمُّ وَأَطْوَلُ ‏.‏

References2 variants
In-Book Reference
Book 1, Hadith 346
USC-MSA web (English) reference
Book 1, Hadith 339 (deprecated numbering scheme)