The Segulah of Learning Degel Machaneh Ephraim
Torah learning
Among the segulos associated with the Ahavas Yisrael is the learning of the sefer Degel Machaneh Ephraim. The Berditchever Rav, author of Kedushas Levi, wrote in his haskamah (approbation) to the sefer, "I am assured that this sefer will enliven and inspire the hearts of our brethren Bnei Yisroel and set them aflame to serve Hashem with avodas haBoreh Baruch Hu." The Chozeh of Lublin wrote in his haskamah that the merit of the author, a gaon and a man of God, will surely aid all who study these words that came from his holy mouth. When they recite them in the author's name, his lips will move in the grave and he will act as an advocate on our behalf, because tzaddikim are even greater in death than in life.
Source: Haskamos to Degel Machaneh Ephraim (Kedushas Levi; the Chozeh of Lublin)