《资治通鉴·唐纪·唐纪二十八》
唐玄宗开元六年春季，正月，辛丑，突阙毗伽可汗前来请求与唐和解；玄宗表示同意。
开元六年戊午，公元七一八年春，正月，辛丑，突厥毘伽可汗来请和；许之。
In the spring of the sixth year of the Kaiyuan reign of Emperor Xuanzong of the Tang Dynasty, in the first month, on Xin Chou, the Pi Jia Khan of the Turks came to ask for reconciliation with the Tang Dynasty; Emperor Xuanzong expressed his agreement.