《魏书·列传·卷五十八》
当时北方诸羌数万家，凭借天险作乱，前后牧守都不能制止，奸暴之徒，名声很坏，朝廷十分担心，任命刘藻为北地太守。
时北地诸羌数万家，恃险作乱，前后牧守不能制。奸暴之徒，并无名实，朝廷患之，以藻为北地太守。
At that time, tens of thousands of Qiang tribes in the north were making trouble by relying on their natural defenses. Successive prefects were unable to stop them. The wicked and violent ones had a bad reputation, and the court was very worried. Liu Zao was appointed prefect of Beidi.