Musnad Ahmad 1153:92

Sufyan narrated to us, from al-Zuhri, from Urwah, from Aisha: Safiyyah menstruated after she had performed the Ifadah (Tawaf al-Ifadah). She mentioned that to the Messenger of Allah, peace and blessings of Allah be upon him, and he said: "Is she going to detain us?" I said: "She menstruated after she had performed the Ifadah." He said: "Then let her depart," or he said: "Then no [need to wait], if so."