《金史·本纪·卷二》
耶律坦在西南诸部招降，西边直到夏国边境，那里的招讨使耶律佛顶投降。
耶律坦招徕西南诸部，西至夏，其招讨使耶律佛顶降。
Yelü Tan recruited and pacified the various southwestern tribes, reaching all the way to the border of the Western Xia Empire, where the Recruitment Envoy, Yelü Foding, surrendered.