Muwatta Malik, Book 20, Hadith 234 (USC-MSA) ⓘ
Yahya related to me from Malik from Abd ar-Rahman ibn al-Qasim from his father from A'isha umm al-muminin that Safiyya bint Huyy began menstruating and so she mentioned it to the Messenger of Allah, may Allah bless him and grant him peace, and he asked, "Will she delay us?" and he was told, "She has already done the tawaf al-ifada," and he said, "Then she will not delay us. "
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ، أَنَّ صَفِيَّةَ بِنْتَ حُيَىٍّ، حَاضَتْ فَذَكَرْتُ ذَلِكَ لِلنَّبِيِّ صلى الله عليه وسلم فَقَالَ " أَحَابِسَتُنَا هِيَ " . فَقِيلَ إِنَّهَا قَدْ أَفَاضَتْ . فَقَالَ " فَلاَ إِذًا " .
also referenced under: Book 20, Hadith 932 (In-Book)