After Qazaghan had taken control of the Chagatai ulus in around 1346, he appointed Abdullah as governor of Samarkand. During his father's lifetime, Abdullah led an expedition against Khwarazm, although Qazaghan had been against it.
Following Qazaghan's takeover of the Chagatai khanate in around 1346, he designated Abdullah as governor of Samarkand. Meanwhile, during his father's tenure, Abdullah led a military operation against Khwarazm, although Qazaghan had expressed reservations about it.