(70) باب مَنْ قَالَ الاِثْنَيْنِ وَالْخَمِيسِ
Narrated Hafsah, Ummul Mu'minin:
The apostle of Allah (ﷺ) used to fast three days every month: Monday, Thursday and Monday in the next week. (DE)
Reference (DE): Sunan Abi Dawud 2451 (DE)
In-book reference (DE): Book 14, Hadith 139 (DE)
English translation (DE): Book 13, Hadith 2445 (DE)