Abu Salamah bin Abdul Rahman states: When a man struck the hand of Sayyiduna Uthman (may Allah be pleased with him), he said: "This is the first hand that wrote the Mufassal surahs."
Al-Tabarani recorded it, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14552
Hadith Gradingمحدثین:إسنادہ حسن۔
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (119)»