Abd al-Rahman bin al-Qasim narrates from his father, who narrates from Sayyidah Aishah (may Allah be pleased with her), that the Messenger of Allah (peace and blessings be upon him) sacrificed a cow on behalf of his wives.
Imam al-Shafi'i (may Allah have mercy on him) said: He (peace and blessings be upon him) sent sacrificial animals (hady), and it was only the one with whom he sent them who slaughtered them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19164