Orientis partibus
Adventavit Asinus
Pulcher et fortissimus
Sarcinis aptissimus.
Hez, Sire Asnes, car chantez,
Belle bouche rechignez,
Vous aurez du foin assez
Et de l’avoine a plantez.
From the Eastern lands the Ass is come, beautiful and very brave, well fitted to bear burdens. Up! Sir Ass, and sing. Open your pretty mouth. Hay will be yours in plenty, and oats in abundance.

Source: Wikipedia