Explanation

The first Sariya was Hazrat Ubaidah bin Haris

Name the last Sariya Hazrat Saad bin Abi Waqas (R.A)

When the first Sariya was fought in Rabakh in 1st A.H Ramazan 1st hijri March 623 A.D

The first "Sariya" (battle ) was known as "Saiful Bahar"