مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1425
The Musnad of az-Zubair bin al-'Awwam
It was narrated from al Mundhir bin az-Zubair (رضي الله عنه) from his father that The Prophet (ﷺ) gave a share to az-Zubair, a share to his mother, and two shares to his horse.
Musnad Ahmad 1425Hasan because of corroborating evidence and this is a Da'if