Hadith 4:361
Hafs ibn Ghiyath narrated to us, from al-Ala’ ibn al-Musayyab, from his father, that the Messenger of Allah (may Allah bless him and grant him peace) used to fast on Monday and Thursday.
حدثنا حفص بن غياث عن العلاء بن المسيب عن أبيه أن رسول الله صلى الله عليه وسلم كان يصوم الاثنين والخميس