Hadithcore
Sahih Muslim, 614 b
sahih

Abu Musa reported on the authority of his father that an Inquirer came to the Prophet (ﷺ) and asked him about the times of prayers, and the rest of the hadith is the same (as narrated above) but for these words:

" On the second day he (the Prophet) observed the evening prayer before the disappearance of the twilight."

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ بَدْرِ بْنِ عُثْمَانَ، عَنْ أَبِي بَكْرِ بْنِ أَبِي مُوسَى، سَمِعَهُ مِنْهُ، عَنْ أَبِيهِ، أَنَّ سَائِلاً، أَتَى النَّبِيَّ صلى الله عليه وسلم فَسَأَلَهُ عَنْ مَوَاقِيتِ الصَّلاَةِ ‏.‏ بِمِثْلِ حَدِيثِ ابْنِ نُمَيْرٍ غَيْرَ أَنَّهُ قَالَ فَصَلَّى الْمَغْرِبَ قَبْلَ أَنْ يَغِيبَ الشَّفَقُ فِي الْيَوْمِ الثَّانِي ‏.‏

References2 variants
In-Book Reference
Book 5, Hadith 228
USC-MSA web (English) reference
Book 4, Hadith 1281 (deprecated numbering scheme)