Volume 2, Book 23, Number 338:
Narrated Anas bin Malik:
The Prophet said, “Zaid took over the flag and was martyred. Then it was taken by Jafar who was
martyred as well. Then ‘Abdullah bin Rawaha took the flag but he too was martyred and at that time
the eyes of Allah’s Apostle were full of tears. Then Khalid bin Al-Walid took the flag without being
nominated as a chief (before hand) and was blessed with victory.”