Segula To Purify The Soul On Shabbos

Because Shabbos is the Yoma DiNishmasa, day of the soul and the study of Ohr HaChaim purifies the soul and refines it, it is therefore a segulah to study it on Shabbos.

(Rav Dovid Moshe of Tshortkov) (Ner Maarvi, page 215).