أَخْبَرَنَا إِسْحَاق بْنُ عِيسَى، أَخْبَرَنَا هُشَيْمٌ، عَنْ يُونُسَ، عَنْ الْحَسَنِ، قَالَ: "الْمُسْتَحَاضَةُ تَعْتَدُّ بِالْأَقْرَاءِ".
Imam Hasan, may Allah have mercy on him, said: A woman experiencing istihada will observe the waiting period according to the days of her menstruation; that is, if she is divorced, her waiting period is three periods (qur’).