You searched for: “ad beneficientiam velox
Ad vindictam tardus, ad beneficientiam velox. (Latin)
Translation: "Punish slowly, do good quickly."

Motto of Henry I (918-936) who forced the dukes of Bavaria and Swabia to recognize his authority. He protected Saxony against the Slavs by building several fortresses and by creating a powerful cavalry which he used to defeat the invading Magyars on the Unstrut River in 933.

King Henry succeeded in annexing the key Carolingian realm of Lorraine to the east Franconian realm. He is regarded as the actual founder of the German Empire.