《魏书·列传·卷八十八》
太和十二年，勿吉又派使者来京师进贡用木苦木做杆的箭以及各种土特产。
太和十二年，勿吉复遣使贡楛矢方物于京师。
太和十二年，勿吉又派使者来京师进贡用木苦木做杆的箭以及各种土特产。 -> In the twelfth year of Taihe, the Wujiguo again dispatched emissaries to the imperial court to offer tribute that included arrows with shafts made of mukumu as well as various local products.