In Rome, the Istituto per l'Oriente houses the library belonging to one of the most important scholar of the last century, Carlo Alfonso Nallino who, during his life, collected a large amount of printed and lithographed books as well as a small number of manuscripts in Arabic. The Īqāẓ al-wasnān fī l-ʿamal bi-l-ḥadīṯ wa-l-Qurʾān by al-Sanūsī, the only manuscript copy identified so far, is part of this small collection. My intent is to present its description along with the description of other two manuscripts acquired by Nallino containing two works written by the same Sufi scholar, al-Salsabīl al-maʿīn fī l-ṭarāʾiq al-arbaʿīn and al-Manhal al-rāwī al-rāʾiq fī asānīd al-ʿulūm wa-uṣūl al-ṭarāʾiq.