Yosef Karo, Translation:Shulchan Aruch — Orach Chaim 682…
“ There are some who say that when one forgot "For the miracles..." in Grace After Meals, when he reaches "May the Merciful One...," he should say "May the Merciful One perform for us miracles and wonders, just as You did for our fathers in those days at this season, in the days of Matityahu... ”
