Muhammad bin ‘Abbad, may Allah have mercy on him, asked Sayyiduna Jabir bin ‘Abdullah, may Allah be pleased with him, while he was performing Tawaf of the House of Allah: I have heard that the Messenger of Allah ﷺ forbade (voluntary) fasting on Friday. He said: Yes, by the Lord of this Ka‘bah, it is so.
Hadith Referenceالسنن المأثورة / باب ما جاء في الأذان / 292
Hadith Takhrijصحیح بخاری، الصوم، باب صوم يوم الجمعة، صحیح مسلم، الصيام، باب كراهة صيام يوم الجمعة منفرداً، رقم : 1143