568 - Ishaq narrated to us, saying: Al-Walid ibn Muslim informed us, saying: I heard al-Awza'i say - regarding a woman experiencing istihada (prolonged non-menstrual bleeding) if she does not know the timing of her women's cycles and had no known days in the past - he said: "We follow this hadith: 'When the menstruation comes, leave the prayer.'"
Al-Awza'i said: "Its arrival is determined by the blackness of the blood, its foul odor, and its alteration; it does not persist in this state upon her, because if it were to persist, it would kill her. So, if the blood turns black, it is menstruation, and if the menstruation retreats and becomes yellowish or murky, she is then in a state of istihada."
Abu Ya'qub said: "In what was narrated by Muhammad ibn 'Amr, from al-Zuhri, from 'Urwah, that the Prophet, may Allah bless him and grant him peace, said to Umm Habibah: 'Indeed, menstrual blood is a black blood that is known' - there is a confirmation of al-Awza'i's statement. Likewise, it was narrated from Ibn 'Abbas that he said to a woman experiencing istihada: 'As for as long as she sees the Bahri (dark, deep-colored) blood, she should leave the prayer, and when it exceeds that, she should perform ghusl and pray.'"
٥٦٨ - حدثنا إسحاق، قال: أبنا الوَليد بن مُسلِم، قال: سمعت الأوزاعي يقول -في المستَحاضَة إذا لم تَعرِف وَقت نِسائها، ولم تكُن لَها أيامٌ تُعرَف فيما مَضَى-؛ قال: «نأخُذ بهذا الحديث: «إذا أَقبَلَت الحَيضَة فاترُكي الصَّلاة»».
قال الأوزاعي: «وإقبالها سَوَاد الدم ونَتَنُه وتَغَيُّره؛ لا يَدُوم عَلَيها؛ لأنه لَو دام عَلَيها قَتَلَها، فإذا اسوَدَّ الدم فهو حَيض، وإذا أدبَرَت الحَيضة فَصَارَت صُفرَةً أو كُدرَة؛ فهي مُستَحاضَة».
قال أبو يَعقوب: «وفيما رَوَى محمد بن عَمرو، عن الزُّهري، عن عروة، أن النبي صلى الله عليه وسلم قال لأم حَبيبَة: «إن دَمَ الحَيض دمٌ أَسوَد يُعرف» - تَصديقُ قَول الأوزاعي، وكذلك رُوي عن ابن عَبَّاس أنه قال لامرأةٍ مُستَحاضَة: «أما ما دامَت تَرَى الدم البَحرانيّ؛ فَلتَدَع الصَّلاة، فإذا جاوزت ذلك اغتَسَلَت وصَلَّت»».
