ʻAbd Allāh ibn Ḥumayyid al-Sālimī (circa 1869–circa 1914) was a leading Omani Ibadite (also seen as Ibadhite and Ibadi) scholar and poet, who was born in the town of Al-Ḥoqain in the Rustāq region of the interior of Oman. Ibadism is an Islamic denomination that traces its roots to the seventh century, at the time of the Sunni−Shiite schism. It is named after Abdullāh ibn Ibāḍ, one of the founding scholars of the doctrine. Today’s adherents of Ibadism are found primarily in Oman, in addition to other communities in North and East Africa. Al-Sālimī first studied Islamic jurisprudence under the scholars of his area, before he traveled to the eastern region to broaden his knowledge by becoming a student of the renowned Sheikh Ṣālih ibn ʻAlī al-Ḥārithī (circa 1834−circa 1896). Despite his relatively short life, al-Sālimī wrote numerous books on a range of issues, including Islamic doctrine and jurisprudence, kalām (cosmological argument), comparative religion, Arabic grammar, ʻarūḍ (Arabic poetic meters), and history. This manuscript copy is the first part of a commentary titled Maʻārij al-āmāl (The ascendance of hope), in which al-Sālimī explains some of the concepts in his earlier versified treatise Madārij al-kamāl (The ladders of perfection), which itself is a commentary on Mukhtaṣar al-khiṣāl (The summary of traits) by Ibadite Yemeni scholar Abū Isḥāq Ibrāhīm ibn Sulaymān al-Ḥaḍramī ibn Qays (died 1082). The supercommentary deals with several topics in Islamic jurisprudence from an Ibadite perspective. This volume focuses on the rites of purification and ablution as part of the jurisprudence of salāt (prayers). The commentary is divided into many kalām topics that are in turn subdivided into masāʼil (issues) in the form of questions and answers. The manuscript, in black ink with frequent section rubrication, has no colophon information but is in good condition. No scribe name or date of production is given.