 On reaching Balkh, Najm resolved to march in person into Mawarannahr, taking with him the governor of Herat, the Amirs of Khurasan, and Biram Khan of Balkh.During his journey, Najm passed the Amu Darya and was soon joined by Babur, creating an army that is said to have been 60,000 men strong.Early in the Autumn the army advanced to Khozar, ultimately seizing the city.