Alqamah narrated that Sayyiduna Abdullah (may Allah be pleased with him) sent a sacrificial animal with him and said: "You and your companions eat one third, give one third in charity, and send one third to the family of my brother Utbah." Sufyan was asked: "Was it a voluntary sacrifice?" He said: "Yes."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9667