Castilian is old that has not yet replaced the " (f) " initial by the " (h) ". Unusual and equivalent to " hiriese " It's the 3rd person singular preterite imperfect subjunctive of the verb to hurt Latin ferio feris ferire meaning hurt, hit and also to utter. In 1354 Pedro I the cruel, King of Castiella, Toledo, Leon, Gallizia...directs a letter trying to the case that Christians and Jews have to advance from the city of Murcia: " quando algunt christiano firiese to algunt Jew who pechase seys mill maravedis and sy algunt Jew firiese to christiano... "
