From Sahih Bukhari (Hadith 2952):
Narrated `Aisha:We set out in the company of Allah's Messenger (ﷺ) five days before the end of Dhul Qa'da intending to perform Hajj only. When we approached Mecca Allah's Messenger (ﷺ) ordered those who did not have the Hadi (i.e. an animal for sacrifice) with them, to perform the Tawaf around the Ka`ba, and between Safa and Marwa and then finish their Ihram. Beef was brought to us on the day of Nahr (i.e. the days of slaughtering) and I asked, "What is this?" Somebody said, Allah's Messenger (ﷺ) has slaughtered (a cow) on behalf of his wives
Reference: Bukhari 2952