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كتاب الطهارة
1  
Purification (Kitab Al-Taharah)
(114)
Chapter: Those Who State: She Should Combine Between Two Prayers, And Perform One Ghusl Before Both Of Them
(113)
باب مَنْ قَالَ تَجْمَعُ بَيْنَ الصَّلاَتَيْنِ وَتَغْتَسِلُ لَهُمَا غُسْلاً
Sunan Abi Dawud 294

Narrated Aisha, Ummul Mu'minin:

A woman had a prolonged flow of blood in the time of the Messenger of Allah (ﷺ). She was commanded to advance the afternoon prayer and delay the noon prayer, and to take a bath for them only once; and to delay the sunset prayer and advance the night prayer and to take a bath only once for them; and to take a bath separately for the dawn prayer.

I (Shu'bah) asked AbdurRahman: (Is it) from the Prophet (ﷺ)? I do not report to you anything except from the Prophet (ﷺ).

حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتِ اسْتُحِيضَتِ امْرَأَةٌ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَأُمِرَتْ أَنْ تُعَجِّلَ الْعَصْرَ وَتُؤَخِّرَ الظُّهْرَ وَتَغْتَسِلَ لَهُمَا غُسْلاً ‏.‏ وَأَنْ تُؤَخِّرَ الْمَغْرِبَ وَتُعَجِّلَ الْعِشَاءَ وَتَغْتَسِلَ لَهُمَا غُسْلاً وَتَغْتَسِلَ لِصَلاَةِ الصُّبْحِ غُسْلاً ‏.‏ فَقُلْتُ لِعَبْدِ الرَّحْمَنِ أَعَنِ النَّبِيِّ صلى الله عليه وسلم فَقَالَ لاَ أُحَدِّثُكَ عَنِ النَّبِيِّ صلى الله عليه وسلم بِشَىْءٍ ‏.‏
Grade: Sahih (Al-Albani)  صحيح   (الألباني) حكم   :
Reference : Sunan Abi Dawud 294
In-book reference : Book 1, Hadith 294
English translation : Book 1, Hadith 294