وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا
قَالَتْ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَصُومُ الِاثْنَيْنِ وَالْخَمِيس
Aishah said that God’s messenger used to fast on Mondays and Thursdays. Tirmidhi and Nasai transmitted it.
Mishkat al-Masabih 1964, Book 8, Fasting, Hadith 98. 1 min read