Sunan an-Nasa'i
Sunan an-Nasa'i 366
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ قَالَتْ فَاطِمَةُ بِنْتُ أَبِي حُبَيْشٍ لِرَسُولِ اللَّهِ صلى الله عليه وسلم لاَ أَطْهُرُ أَفَأَدَعُ الصَّلاَةَ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّمَا ذَلِكِ عِرْقٌ وَلَيْسَتْ بِالْحِيضَةِ فَإِذَا أَقْبَلَتِ الْحِيضَةُ فَدَعِي الصَّلاَةَ وَإِذَا ذَهَبَ قَدْرُهَا فَاغْسِلِي عَنْكِ الدَّمَ وَصَلِّي " .
Qutaybah narrated to us, from Malik, from Hisham ibn 'Urwah, from his father, from 'A'ishah, who said: Fatimah bint Abi Hubaysh said to the Messenger of Allah (ﷺ): 'I do not become pure; should I stop praying?' The Messenger of Allah (ﷺ) said: 'That is only a vein, not menstruation. When menstruation begins, stop praying; when its usual duration has passed, wash the blood from yourself and pray.'
Translation notes
The full chain is included. This version specifies waiting until the usual duration of menstruation has passed before washing the blood and praying.
أَخْبَرَنَا قُتَيْبَةُ،
The English witness omits the Arabic chain.
Please verify the chain against the Arabic source.