Muhammad bin Ishaq said that among the Ansar who were martyred on the Day of the Bridge (al-Jisr), then from Banu Abd al-Ashhal, then from Banu Za'ura', is the name of Sayyiduna Sa'd bin Salamah (may Allah be pleased with him).
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5455