Bonaventure relates that when the order had greatly increased, St. Francis had a vision which determined him to reduce the rule to a shorter form. Francis, with Brother Leo and Brother Bonizo of Bologna, went in 1223 to Fonte Colombo, a beautiful wood-covered hill near Rieti, where, fasting on bread and water, he caused the rule to be written down by Brother Leo. Brother Elias, to whom this rule was entrusted, after a few days declared that he had lost it, hence Francis had the rule rewritten. The rule composed in 1223 was solemnly confirmed by the Bull "Solet annuere" of Honorius III of 29 November 1223.