Rabbi Ashlag, also known as Rabbi Yehuda Leib HaLevi Ashlag, was a prominent Jewish mystic and Kabbalist born in 1885 in Poland. He is best known for his comprehensive commentary on the Zohar, a foundational work of Kabbalah. His teachings emphasized the importance of spiritual growth and the interconnectedness of all souls. In addition to his writings, Rabbi Ashlag founded the Bnei Baruch organization, which aims to disseminate Kabbalistic knowledge to a broader audience. He passed away in 1954, leaving a lasting impact on the study of Kabbalah and inspiring many to explore its spiritual teachings.