Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrated that I did not see the Prophet Muhammad (peace and blessings be upon him) deliberately fasting on any day, considering it superior to other days, except for the day of Ashura and this month of Ramadan.
Hadith Referenceاللؤلؤ والمرجان / كتاب الصيام / 694
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 30 كتاب الصوم: 69 باب صيام يوم عاشوراء»