سَأَلْتُ أَبَا الْحَسَنِ الْأَوَّلَ ع قُلْتُ الْمَرْأَةُ تَرَى الطُّهْرَ قَبْلَ غُرُوبِ الشَّمْسِ كَيْفَ تَصْنَعُ بِالصَّلَاةِ قَالَ إِذَا رَأَتِ الطُّهْرَ بَعْدَ مَا يَمْضِي مِنْ زَوَالِ الشَّمْسِ أَرْبَعَةُ أَقْدَامٍ فَلَا تُصَلِّي إِلَّا الْعَصْرَ[1] لِأَنَّ وَقْتَ الظُّهْرِ دَخَلَ عَلَيْهَا وَ هِيَ فِي الدَّمِ وَ خَرَجَ عَنْهَا الْوَقْتُ وَ هِيَ فِي الدَّمِ فَلَمْ يَجِبْ عَلَيْهَا أَنْ تُصَلِّيَ الظُّهْرَ وَ مَا
“I once asked abu al-Hassan, al-Awwal (a.s.), about the case of a woman who finds herself Hayd (menses) free just before sunset. What must she do for Salah (prayer)? He (the Imam) said, ‘If she finds herself Hayd (menses) free after four steps have passed from noon-time, she only performs al-‘Asr Salah (prayer). It is