Muwatta Malik · Hadith 868

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ ‏{‏مَا اسْتَيْسَرَ مِنَ الْهَدْى‏}‏ بَدَنَةٌ أَوْ بَقَرَةٌ ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Urnar used to say, "The least thing that is acceptable as a sacrificial animal is a camel or a cow

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).