Sunan Abi Dawud 1793
سنن أبي داود#1793Da'ifحَدَّثَنَا أَحْمَدُ بْنُ صَالِحٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي حَيْوَةُ، أَخْبَرَنِي أَبُو عِيسَى الْخُرَاسَانِيُّ، عَنْ عَبْدِ اللَّهِ بْنِ الْقَاسِمِ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّ رَجُلاً، مِنْ أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم أَتَى عُمَرَ بْنَ الْخَطَّابِ - رَضِيَ اللَّهُ عَنْهُ - فَشَهِدَ عِنْدَهُ أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم فِي مَرَضِهِ الَّذِي قُبِضَ فِيهِ يَنْهَى عَنِ الْعُمْرَةِ قَبْلَ الْحَجِّ .
Narrated Sa'id ibn al-Musayyab: A man from the Companions of the Prophet (ﷺ) came to Umar ibn al-Khattab (may Allah be pleased with him). He bore witness before him that when he (the Prophet) was suffering from a disease of which he died he heard the Messenger of Allah (ﷺ) prohibiting performing of umrah before hajj
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 11:73