Hadithcore
Sahih Muslim, 419 b
sahih

Anas reported:

The last glance that I have had of the Messenger of Allah (ﷺ) (before his death) was that when he on Monday drew the curtain aside. The hadith transmitted by Salih is perfect and complete.

وَحَدَّثَنِيهِ عَمْرٌو النَّاقِدُ، وَزُهَيْرُ بْنُ حَرْبٍ، قَالاَ حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ أَنَسٍ، قَالَ آخِرُ نَظْرَةٍ نَظَرْتُهَا إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم كَشَفَ السِّتَارَةَ يَوْمَ الاِثْنَيْنِ بِهَذِهِ الْقِصَّةِ وَحَدِيثُ صَالِحٍ أَتَمُّ وَأَشْبَعُ ‏.‏

References2 variants
In-Book Reference
Book 4, Hadith 107
USC-MSA web (English) reference
Book 4, Hadith 841 (deprecated numbering scheme)