《资治通鉴·唐纪·唐纪十四》
真珠可汗听此言极为恐惶，忙派使者前来谢罪，并且请求派薛延陀兵前来协助攻打高丽；太宗没有答应，等到高丽军队在驻骅山被打得大败，莫离支便让人劝说真珠可汗，以丰富的利益加以引诱，真珠可汗慑服于唐朝的力量而未敢有所举动。
真珠可汗惶恐，遣使致谢，且请发兵助军；上不许。及高丽败于驻骅山，莫离支使靺鞨说真珠，啖以厚利，真珠慑服不敢动。
Zhenzhu Khan was terrified when he heard this, and he quickly sent an envoy to apologize, and asked to send Xue Yantuo soldiers to help attack Goguryeo. Taizong did not agree. When the Goguryeo army was defeated at Zhuhuashan, Molizhi persuaded Zhenzhu Khan by tempting him with rich rewards. Zhenzhu Khan was subdued by the strength of the Tang Dynasty and did not dare to act.