أَخْبَرَنَا مُحَمَّدُ بْنُ عِيسَى، حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ عَمْرٍو، عَنْ الْحَسَنِ، قَالَ: "إِذَا صَلَّتْ الْمَرْأَةُ رَكْعَتَيْنِ، ثُمَّ حَاضَتْ فَلَا تَقْضِي إِذَا طَهُرَتْ".
It is narrated from Imam Hasan al-Basri, may Allah have mercy on him, that if a woman gets her menses after performing two rak'ahs, then after becoming pure she does not have to make up that prayer.