Muwatta Malik 844
موطأ مالك#844SahihThese are the words of a Companion, not of the Prophet ﷺ. The chain is graded on its own terms.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ إِذَا نُتِجَتِ النَّاقَةُ فَلْيُحْمَلْ وَلَدُهَا حَتَّى يُنْحَرَ مَعَهَا فَإِنْ لَمْ يُوجَدْ لَهُ مَحْمَلٌ حُمِلَ عَلَى أُمِّهِ حَتَّى يُنْحَرَ مَعَهَا .
Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to say, "If a she-camel that is being driven as a sacrificial animal gives birth, the offspring should be carried along as well and they are sacrificed together with her, and if there is no place where they can be carried, they should be carried on the mother until they are all sacrificed
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: 20:140