Miracle Stories and Continuation of Path of the Just, The Trait of Cleanliness, Raize Guttman, 1-1-12
Mesillat Yesharim, Rabbi Moshe Chayim Luzzatto, The Path of the Just, Chapter 10, The Trait of Cleanliness, pp. 107-111, and The Particulars of the Trait of Cleanliness, Feldheim Publishers