《新唐书·列传·卷一百四十一》
整军二十万人入寇松州，又派使者进贡金甲，说是来迎娶公主的。还对左右说： 公主迎不来，我们就深入唐地。 
勒兵二十万入寇松州，命使者贡金甲，且言迎公主，谓左右曰： 公主不至，我且深入。 
He sent 200,000 troops to invade Songzhou, and sent envoys to offer golden armor, saying that he was coming to marry the princess. He also said to his left and right: If we can't marry the princess, we will go deep into the Tang Dynasty.