Kurayb narrates: Some people sent me to Sayyidah Umm Salamah (may Allah be pleased with her) so that I could ask her on which days the Prophet (peace and blessings be upon him) fasted most. Sayyidah Umm Salamah (may Allah be pleased with her) said: "Saturday and Sunday. He used to say: 'These two days are the Eid (days) of the polytheists, and I love to act contrary to them.'"
Al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are thiqat (trustworthy). Ibn Hibban graded it sahih (authentic).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصيام / 5199
Hadith Gradingمحدثین:إسنادہ صحیح
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