Imam Alqamah says that I asked Umm al-Mu'mineen Sayyidah Aisha Siddiqa (may Allah be pleased with her) whether the Messenger of Allah (peace and blessings be upon him) used to specify any particular day for worship. She replied: The practice of the Messenger of Allah (peace and blessings be upon him) was continuous. Who among you has the strength that the Messenger of Allah (peace and blessings be upon him) had?
Hadith Referenceشمائل ترمذي / باب ما جاء فى صوم رسول الله صلى الله عليه وسلم / 309
Hadith Gradingزبیر علی زئی:صحيح
Hadith Takhrij{ « صحيح » } : «صحيح بخاري (1987) ، وصحيح مسلم (783)»