Sayyidah Aishah (may Allah be pleased with her) said: The Messenger of Allah (peace and blessings be upon him) intended to depart, and he saw Sayyidah Safiyyah (may Allah be pleased with her) standing at the door of her tent, sad and distressed, because she had begun menstruating. He (peace and blessings be upon him) said: 'Aqra halqa (literally: barren, shaven-headed! in the idiom of Quraysh), "you are going to hold us back." Then he said: "Did you not perform the ifadah on the Day of Sacrifice (Yawm al-Nahr)?" (meaning the tawaf). She said: Yes! He (peace and blessings be upon him) said: "Then depart."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9755