Muhajir narrates: Sayyidah Asma' bint Yazid bin al-Sakan (may Allah be pleased with her) was the cousin of Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him). On the day of the Battle of Yarmuk, she killed nine Romans with a tent pole.
Imam al-Tabarani recorded this narration, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 15420