Musnad Ahmad 1153:1644

Yahya narrated to us, from Hisham, who said: My father informed me, saying: Aisha informed me that the Prophet, peace and blessings of Allah be upon him, mentioned Safiyyah. They said: "She has menstruated." He said: "Is she going to detain us?" They said: "She has already performed the Ifadah (Tawaf al-Ifadah)." He said: "Then no (there is no issue)."