سنن دارمي
Sunan ad-Darimi
من كتاب الطهارةFrom the Book of Purification
باب إِذَا اخْتَلَطَتْ عَلَى الْمَرْأَةِ أَيَّامُ حَيْضِهَا في أَيَّامِ اسْتِحَاضَتِهَا:Chapter: When a Woman's Menstrual and Prolonged Bleeding Days Are Confused
Hadith 951
قُلْتُ: وَكَيْفَ إِنْ كَانَ طَلَّقَ وَهِيَ تَحِيضُ فِي كُلِّ سَنَةٍ مَرَّةً كَمْ تَعْتَدُّ؟، قَالَ: "إِنْ كَانَتْ تَحِيضُ أَقْرَاؤُهَا مَعْلُومَةٌ هِيَ أَقْرَاؤُهَا، فَإِنَّا نُرَى أَنْ تَعْتَدَّ أَقْرَاءَهَا".
Imam Awza'i, may Allah have mercy on him, said: If divorce takes place and menstruation occurs once a year, then what will be the duration of the waiting period ('iddah)? He replied: If she used to have menstruation and purity at their appointed times, then in our opinion, she will observe the waiting period of menstruation.
