|Full Name||Abu l-Abbas Jamal al-Din Ahamad b. Muhammad b. al-Fahd al-Hilli al-Asadi|
|Epithet||Ibn Fahd al-Hilli|
|Studied in||Hillah, Jabal Amel|
|Professors||'Ali b. Khazin al-Haʾiri, 'Ali b. Yusuf b. 'Abd al-Jalil al-Nili, Ibn Muttawaj al-Bahrani, ...|
|Students||'Ali b. Hilal al-Jazayiri, Ibn Rashid al-Qatifi, 'Abd al-Sami' b. Fayyad al-Asadi, ...|
|Works||'Uddat al-da'i wa najah as-sa'i, Al-Muhadhdhab al-bari' fi sharh al-mukhtasar al-nafi', ...|
|Convinced the ruler of Baghdad to convert to Shiite Islam. The ruler declared Shiite Islam as the official denomination of his state and make coins with the names of the Twelve Imams (a)|
Abu l-ʿAbbās Aḥmad b. Muḥammad b. Fahd al-Ḥillī (Arabic: ابوالعَبّاس أحمَد بن محمد بن فَهد الحلي) (b.757/1356 – d.841/1437-8), a Shi'ite scholar, faqih and muhaddith (hadith scholar). He was renowned mostly for his works on ethics, supplications and spirituality. His most famous work in this field is 'Uddat al-da'i wa najah al-sa'i which deals with supplications and related issues.
Among his teachers are the following:
Aqa Buzurg Tihrani has mentioned him also among the students of al-Shahid al-Awwal. Moreover, it is known that around 824/1421, he visited Jabal 'Amil and in Jezzine, received "ijaza" (permission) from Ali b. Muhammad b. al-Makki, son of al-Shahid al-Awwal.
The following are among Ibn al-Fahd's notable students:
Debate with the Sunni Scholars
In the year 840/1436-7, Ispand Mirza, the ruler of Baghdad, invited him to discuss with Sunni scholars. In the debate, Ibn al-Fahd and other Shi'a scholars discussed with the Sunnis and were able to convince the ruler of the rightfulness of Shi'a school. Thus, Ispand Mirza converted to Shi'ism and declared Shi'a Islam as the official religion of his state and made coins with the names of the Twelve Imams (a).
Since Ibn Fahd was famous for his piety and spirituality and had written some works in ethics and mysticism, Qadi Nur Allah Shushtari introduces him as a Sufi.  Ayatollah Jawadi Amuli also holds that he had a very high spiritual level. 
He has several works the most important ones are 'Uddat al-da'i wa najah al-sa'i, a book concerning supplications and ethics; and Al-Muhadhdhab al-bari' fi sharh al-mukhtasar al-nafi', which is concerned with fiqh.
Qadi Nur Allah Shushtari has claimed that Ibn Fahd had a book on occult sciences, but at the time of his death, he gave it to someone to throw it in Euphrates. According to this report, Sayyid Muhammad b. Falah al-Musha'sha', who once was Ibn Fahd's student, was able to gain this book with some tricks and by using it could conquer Khuzistan.
- Khwansari, Rawdat al-Jannat, vol. 1, p. 71-72.
- Bahr al-'Ulum, al-Rijal, vol. 2, p. 111.
- Khwansari, Rawdat al-Jannat, vol. 1, p. 74.
- al-Hurr al-'Amili, Amal al-'amil", vol. 2, p. 21; Khwansari, Rawdat al-Jannat, vol. 1, p. 72
- Ibn Fahd, al-muhadhdhab al-bari' , vol. 1, p. 194; Shushtari, Majalish al-mu'minin, vol. 1, p. 579; Ibn Abi Jumhur, 'Awali al-la'ali al-'azizia, vol. 1, p. 8; Khwansari, Rawdat al-Jannat, vol. 1, p. 71-72
- Agha Buzurg, al-Dhari'ah, vol. 13, p. 108
- Afandi, Riyad al-'ulama, vol. 1, p. 64.
- Shushtari, Majalish al-mu'minin, vol. 1, p. 580; Ibn Abi Jumhur, 'Awali al-la'ali al-'azizia, vol. 1, p. 8; Hurr al-'Amili, Amal al-'amil", vol. 1, p. 75; Majisi, Bihar al-anwar, vol. 105, p. 26-27; Afandi, Riad al-'ulama, vol. 3, p. 121; Khwansari, Rawdat al-Jannat, vol. 1, p. 71-72
- Shushtari, Majalish al-mu'minin, vol. 2, pp. 368-370.
- Shushtari, Majalish al-mu'minin, vol. 1, p. 579.
- 'Abd Allah Javadi Amoli, Tafsir Tasnim,
- Agha Buzurg, al-Dhari'a, vol. 2, p. 21; vol. 8, p.68
- Shushtari, Majalish al-mu'minin, vol. 2, pp. 395-396.
- Afandi, Mirza 'Abd Allah, Riad al-'ulama, edited by Ahmad Husayni, Qom, 1401/1981.
- Agha Buzurg Tihrani, al-Dhari'a.
- Bahr al-'Ulum, Muhammad Mahdi, al-Rijal, edited by Muhammad Sadiq Bahr al-'Ulum, Najaf, Maktaba al-'Alamayn.
- Hurr al-'Amili, Muhammad, Amal al-'amil, edited by Ahmad Husayni, Baghdad, 1385/1962.
- Ibn Abi Jumhur, Muhammad, 'Awali al-la'ali al-'azizia, edited by Mujtaba 'Araqi, Qom, 1403/1983.
- Ibn Fahd Hilli, Ahmad, al-muhadhdhab al-bari' fi sharh al-mukhtasar al-nafi' , edited by Mujtaba 'Araqi, Qom, 1407/1986.
- Javadi Amuli, 'Abd Allah, Tafsir Tasnim,
- Khawnsari, Muhammad Baqir, Rawdat al-Jannat, Tehran, 1382/1962.
- Majisi, Muhammad Baqir, Bihar al-anwar, Beirut, 1403/1984.
- Shushtari, Qadi Nur Allah, Majalish al-mu'minin, Tehran, 1407/1986.