Amrah bint Abd al-Rahman (may Allah have mercy on her) said that Ziyad wrote to Sayyidah Aishah (may Allah be pleased with her) that Abdullah bin Abbas (may Allah be pleased with them both) says: "Whoever sends a sacrificial animal, everything that is forbidden to a pilgrim becomes forbidden to him until the sacrifice is slaughtered; and I have sent my sacrificial animal, so write your ruling to me or give instructions to the one with the sacrificial animal." Sayyidah Aishah (may Allah be pleased with her) said: "The matter is not as Abdullah bin Abbas (may Allah be pleased with them both) has said. I made the garlands for the sacrificial animals of the Messenger of Allah (peace and blessings be upon him) with my own hand, then the Messenger of Allah (peace and blessings be upon him) garlanded them with his own hands, then he sent his sacrificial animals with my father, and nothing that Allah had made lawful for him became forbidden to the Messenger of Allah (peace and blessings be upon him) until the sacrifice was slaughtered."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 10190