Muwatta Malik 897
موطأ مالك#897SahihThese are the words of a Companion, not of the Prophet ﷺ. The chain is graded on its own terms.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، قَالَ مَنْ عَقَصَ رَأْسَهُ أَوْ ضَفَرَ أَوْ لَبَّدَ فَقَدْ وَجَبَ عَلَيْهِ الْحِلاَقُ .
Yahya related to me from Malik from Yahya ibn Said from Said ibn al-Musayyab that Umar ibn al-Khattab said, "Anyone who has braided his hair, or plaited it or matted it must shave his head
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: 20:193