مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4098
Musnad of Abdullah bin Mas'ood
It was narrated that ‘Abdullah said: The Messenger of Allah, who is the most truthful one, said: "Selling an unmilked animal is deceit and it is not permissible for a Muslim to deceive.”
Musnad Ahmad 4125Its isnad is da'eef because Jabir is da'eef; he is ibn Yazee