‘Ā'ishah (may Allah be pleased with her) mentioned that they performed Hajj with the Prophet (may Allah's peace and blessings be upon him) on the Farewell Hajj, and after they had finished their rituals, they moved on to the Sacred Mosque to perform the Tawāf of Ifādah. His wife Safiyyah (may Allah be pleased with her) was with them. When it was the night of departure, Safiyyah got her menses, and the Prophet (may Allah's peace and blessings be upon him) desired from her what a husband desires from his wife. ‘Ā'ishah told him that Safiyyah was having her menses. The Prophet (may Allah's peace and blessings be upon him) thought that she had got her menses before she made the Tawāf of Ifādah. Since this Tawāf is a major pillar of Hajj without which Hajj is not complete, thus, she would prevent them from leaving Makkah until she attained purity from her menses and made Tawāf. So, he, may Allah's peace and blessings be upon him said: "‘Aqra Halqa!", which is a famous statement pronounced without intending its true meaning. The Prophet (may Allah's peace and blessings be upon him) then asked whether she was going to detain them until she attained purity from her menses and made her Tawāf for her Hajj. They told him that she had already performed it before she got her menses. So, the Prophet (may Allah's peace and blessings be upon him) said that she could depart with them, since nothing was left for her to do except the Farewell Tawāf, which she had a concession to leave off.
تيسير العلام شرح عمدة الأحكام، عبد الله بن عبد الرحمن البسام، تحقيق: محمد صبحي حلاق، مكتبة الصحابة، الأمارات، مكتبة التابعين، القاهرة، الطبعة: العاشرة 1426هـ. تنبيه الأفهام شرح عمدة الأحكام، محمد بن صالح العثيمين، مكتبة الصحابة، الإمارات، الطبعة: الأولى 1426هـ، 2005م. الإفهام في شرح عمدة الأحكام لابن باز، تحقيق: سعيد القحطاني، مؤسسة عبد العزيز بن باز الخيرية، الرياض، الطبعة: الأولى 1435هـ. خلاصة الكلام شرح عمدة الأحكام، فيصل بن عبد العزيز المبارك، الطبعة: الثانية 1412هـ، 1992م. صحيح البخاري، محمد بن إسماعيل البخاري الجعفي، تحقيق: محمد زهير الناصر، دار طوق النجاة (مصورة عن السلطانية بإضافة ترقيم: محمد فؤاد عبد الباقي)، الطبعة: الأولى 1422هـ. صحيح مسلم، مسلم بن الحجاج القشيري النيسابوري، تحقيق محمد فؤاد عبد الباقي، دار إحياء التراث العربي، بيروت، الطبعة: 1423هـ. تأسيس الأحكام، أحمد بن يحيى النجمي، دار المنهاج، القاهرة، الطبعة: الأولى 1427هـ.