This article offers a brief explanation of tawassul, its levels, and focuses on examples of scholars' emphasis on calling on to the Infallibles as a source of spiritual upliftment and a key solution to their problems by visiting their shrines, holding occasions on their births and mourning sessions on their death anniversaries. Some of these scholars include Ayatullah Baha'ul-Dini, Allamah Tabataba'i, Ayatollah Boroojerdi, and Ayatullah Bahjat.