Parah-Gathering
The 17th of Adar is the Yahrtzeit of Rav Avraham Menachem Danziger, the ninth Admor of Alexander: “The one who gathered the ash of the cow shall immerse his clothing (Numbers 19:10).” The purification and cleansing only happens through “gathering,” when all of Israel is unified. (Rabbi Shmuel Tzvi of Alexander; Tiferet Shmuel)