In the last years of Nizam al-Din's reign, the Mihrabanids had lost control of the greater part of Sistan to the Timurids under Badi' al-Zaman.
Shams al-Din's authority thus continued to be restricted to the northern fringes of Makran, although his ineffectiveness as a ruler quickly led to Sultan Mahmud taking over the practical administration of the government.
[3] Badi' al-Zaman was eventually recalled by his father, Husayn Bayqarah, to Herat; in his place a Timurid commander was left as governor of Sistan.
This, combined with the death of the local magnate Mir Sayyid Ahmad and his two eldest sons, significantly weakened the strength of the anti-Mihrabanid force in Sistan.
[4] The Timurid governor fled without offering battle, allowing the Mihrabanids to take control of Shahr-i Sistan.