Sahih Muslim Book 7, Hadith Number 3037.

Chapter : It is meritorious for one who does intend to go himself to send the sacrificial animal to al-Haram.

‘Aisha (Allah be pleased with her) reported: Allah’s Messenger (may peace be upon him) sent the sacrificial animals and I wove garlands for them with my own ‘hands, and he did not refrain from doing anything which he did not avoid in the state of non-Muhrim.