Sahih Muslim , Book 15, Hadith 4037 (USC-MSA) ⓘ
Salim reported on the authority of his father that Allah's Apostle heard 'Umar while he was taking oath by his father. The rest of the hadith is the same.
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَعَمْرٌو النَّاقِدُ، وَزُهَيْرُ بْنُ حَرْبٍ، قَالُوا حَدَّثَنَا سُفْيَانُ، بْنُ عُيَيْنَةَ عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، قَالَ سَمِعَ النَّبِيُّ صلى الله عليه وسلم عُمَرَ وَهُوَ يَحْلِفُ بِأَبِيهِ . بِمِثْلِ رِوَايَةِ يُونُسَ وَمَعْمَرٍ .
also referenced under: Book 27, Hadith 3 (In-Book) & Hadith 1646 (Reference)