Sahih Bukhari Volume 5, Book 59, Hadith Number 684.

Narrated By ‘Aisha : (The wife of the Prophet) Safiya bin Huyai, the wife of the Prophet menstruated during Hajjat-ul-Wada’ The Prophet said, “Is she going to detain us?” I said to him, “She has already come to Mecca and performed the Tawaf (ul-ifada) around the Ka’ba, O Allah’s Apostle.” The Prophet said, ” Let her then proceed on (to Medina).”