The Holy Quran.
Ibn Abi al-Hadid, 'Abd al-Hamid bin Hibat Allah (586-656 AH), Sharh Nahj al-Balaghah (Commentary on the Peak of Eloquence), Research: Muhammad Abul Fadl Ibrahim, Mu'assasat al-A'lami lil-Matbu'at, Beirut, Second Edition, 1425 AH / 2004 CE.
Ibn Abi Shaybah, 'Abd Allah bin Muhammad al-'Absi al-Kufi (159-235 AH), Al-Musannaf fi al-Ahadith wa al-Athar (The Classified Collection of Hadiths and Narrations), Research: Mukhtar Ahmad al-Nadwi, Dar al-Salafiyyah, India, Bombay, 1st ed., 1402 AH / 1981 CE.
Ibn Abi 'Asim, (206 -287 AH), Al-Ahad wa al-Mathani (Singles and Doubles), Research: Faysal Ahmad al-Jawabirah, Published by Dar al-Rayah, Riyadh, 1st ed., 1411 AH / 1991 CE.
Ibn al-Athir, Majd al-Din al-Mubarak bin Muhammad al-Jazari (544-606 AH), Al-Nihayah fi Gharib al-Hadith wa al-Athar (The Ultimate in Strange Hadith and Narrations), Research: Ahmad bin Muhammad al-Kharrat, Published by: Awqaf Qatar, 1st ed., 1415 AH / 1994 CE.
——————————, Usd al-Ghabah fi Ma'rifat al-Sahabah (The Lions of the Forest in Knowing the Companions), Research: 'Ali Muhammad Mu'awwad, 'Adel Ahmad 'Abd al-Mawjud, Dar al-Kutub al-'Ilmiyyah, Beirut, 1st ed., 1415 AH / 1994 CE.
Ibn Taymiyyah al-Harrani, (661- 728 AH) Minhaj al-Sunnah al-Nabawiyyah (The Way of the Prophetic Sunnah), Research: Taha bin Mahmud Qutri, Published by: Dar al-Nawadir, Cairo, 2nd ed., 2013 CE.
——————————, Majmu'at al-Rasa'il wa al-Masa'il (Collection of Epistles and Issues), Published by: Dar al-Kutub al-'Ilmiyyah, Beirut, 2nd ed., 2014 CE.
Ibn Hibban, Muhammad al-Tamimi (270-354 AH), Al-Thiqat (The Trustworthy Narrators), Research: Sharaf al-Din Ahmad, Dar al-Fikr, Beirut, 1st ed., 1395 AH / 1975 CE.
——————————, Sahih Ibn Hibban, Research: Shu'ayb al-Arna'ut, Mu'assasat al-Risalah, Beirut, 2nd ed., 1414 AH / 1993 CE.
Ibn Hajar al-'Asqalani, Ahmad bin 'Ali (773-852 AH), Tahdhib al-Tahdhib (The Refinement of the Refinement), Published by: Dar al-Rashid, Damascus, 1st ed., 1406 AH / 1986 CE.
——————————, Al-Isabah (The Adequate [in Distinguishing the Companions]), Research: 'Adel Ahmad 'Abd Mawjud and 'Ali Muhammad Mu'awwad, Dar al-Kutub al-'Ilmiyyah, Beirut, 1st ed., 1415 AH.
——————————, Fath al-Bari (The Victory of the Creator [Commentary on Sahih al-Bukhari]), Published by: Dar al-Ma'rifah, Beirut, 2nd ed., 1379 AH.
——————————, Lisan al-Mizan (The Tongue of the Scale), Published by: Mu'assasat al-A'lami, Beirut, 2nd ed., 1390 AH.
Ibn 'Abidin al-Dimashqi, (1784 - 1836 CE), Radd al-Muhtar 'ala al-Durr al-Mukhtar (The Response of the Perplexed on the Chosen Pearl), Research: 'Abd al-Majid Ti'mah Halabi, Published by Dar al-Ma'rifah, Beirut, 5th ed., 2018 CE.
Ibn Kathir, Abul Fida' Isma'il bin 'Umar (701-774 AH), Al-Bidayah wa al-Nihayah (The Beginning and the End), Research: 'Ali Shiri, Published by: Dar Ihya' al-Turath al-'Arabi, Beirut, 1st ed., 1408 AH.
Ibn Manzur, Muhammad bin Mukarram al-Ifriqi (630-711 AH), Lisan al-'Arab (The Tongue of the Arabs), Published by: Dar Sadir, Beirut, 3rd ed., 1414 AH.
Abu Dawud al-Sijistani, Sulayman bin al-Ash'ath (202-275 AH), Sunan Abi Dawud, Research: Sa'id Muhammad al-Lahham, Dar al-Fikr, Beirut, 1st ed., 1410 AH / 1990 CE.
Abu al-Mahasin, Jamal al-Din al-Malati al-Hanafi, (d. 474 AH), Al-Mu'tasar min al-Mukhtasar min Mushkil al-Athar (The Abridged from the Summary of Problematic Narrations), Published by: 'Alam al-Kutub, Beirut, 2nd ed., 2015 CE.
Ahmad bin Hanbal (164-241 AH), Al-Musnad, Dar al-Hadith, Cairo, 1st ed., 1416 AH / 1995 CE.
Al-Bukhari, Abu 'Abdullah Muhammad bin Isma'il (194-256 AH), Sahih al-Bukhari, Published by: Dar Ihya' al-Turath al-'Arabi, Beirut, 1st ed., 2001 CE.
Al-Baghawi, Abu Muhammad al-Husayn bin Mas'ud (d. 516 AH), Tafsir al-Baghawi, Dar Taybah for Publishing and Distribution, Egypt, 4th ed., 1417 AH / 1997 CE.
Al-Bayhaqi, Ahmad bin al-Husayn (384-458 AH), Al-Sunan al-Kubra (The Major Compilation of Sunnahs), Matba'at Majlis Da'irat al-Ma'arif al-'Uthmaniyyah, India, Hyderabad, 1st ed., 1347 AH.
Al-Tirmidhi, Muhammad bin 'Isa (209-279 AH), Sunan al-Tirmidhi, Research: 'Izzat 'Ubayd al-Da'as, Dar Ibn Kathir, Damascus - Beirut, 2nd ed., 1414 AH / 1993 CE.
Al-Tha'labi, Abu Ishaq Ahmad bin Muhammad bin Ibrahim (d. 427 AH / 1035 CE), Tafsir al-Tha'labi (Al-Kashf wa al-Bayan 'an Tafsir al-Quran - The Unveiling and Elucidation of Quran Interpretation), Research: Muhammad bin 'Ashur, Dar Ihya' al-Turath al-'Arabi, Beirut, 1st ed., 1422 AH / 2002 CE.
Al-Hakim al-Naysaburi, Muhammad bin 'Abd Allah (321-403 AH), Al-Mustadrak 'ala al-Sahihayn (The Supplement to the Two Sahihs), Research: Mustafa 'Abd al-Qadir 'Ata, Dar al-Kutub al-'Ilmiyyah, Beirut, 2nd ed., 1411 AH / 1990 CE.
Al-Humaydi, 'Abd Allah bin al-Zubayr (420 - 488 AH), Al-Musnad, Research: Husayn Salim Asad, Published by: Dar al-Saqqa, Damascus, 1st ed., 1996 CE.
Al-Dhahabi, Muhammad bin Ahmad (673-748 AH), Mizan al-I'tidal (The Scale of Moderation), Research: 'Ali Muhammad al-Bajawi, Dar al-Ma'rifah, Beirut, 1st ed., 1963 CE.
——————————, Siyar A'lam al-Nubala' (The Lives of Noble Figures), Published by: Dar al-Hadith, Cairo, 2nd ed., 1427 AH / 2006 CE.
Al-San'ani, 'Abd al-Razzaq bin Hammam (d. 211 AH / 126 CE), Al-Musannaf, Al-Majlis al-'Ilmi, India, 1st ed., 1972 CE.
Al-Tabarani, Abul Qasim Sulayman bin Ahmad (260-360 AH), Al-Mu'jam al-Awsat (The Middle Lexicon), Research: Dr. Muhammad al-Tahan, Maktabat al-Ma'arif, Riyadh, 1st ed., 1405 AH / 1985 CE.
Al-Tabarsi, al-Hasan bin al-Fadl (469-548 AH), Al-Ihtijaj (The Adducing of Proof), Research: Muhammad Baqir Khurasan, Published by al-Murtada, Mashhad, 1st ed., 1386 SH / 1966 CE.
——————————, Majma' al-Bayan (The Gathering of Elucidation), Published by: Dar al-Ma'rifah, Beirut, 1st ed., 1406 AH / 1986 CE.
Al-Nasa'i, Ahmad bin Shu'ayb (215-303 AH), Al-Sunan al-Kubra (The Major Compilation of Sunnahs), Research: 'Abd al-Ghaffar and Sulayman al-Bundar and Husayn Kasrawi, Dar al-Kutub al-'Ilmiyyah, Beirut, 1st ed., 1411 AH / 1991 CE.
Al-Majlisi, Muhammad Baqir (1037--1111 AH), Bihar al-Anwar (Seas of Lights), Mu'assasat al-Wafa', Beirut, 2nd ed., 1403 AH.
Muslim bin al-Hajjaj Abul Husayn al-Qushayri al-Naysaburi (206-261 AH), Sahih Muslim, Research: Muhammad Fu'ad 'Abd al-Baqi, Dar Ihya' al-Turath al-'Arabi, Beirut, 1st ed., 2000 CE.
Al-Haythami, Nur al-Din 'Ali bin Abi Bakr (735-807 AH), Majma' al-Zawa'id (The Compilation of Additions), Research: Muhammad 'Abd al-Qadir Ahmad 'Ata, Dar al-Kutub al-'Ilmiyyah, Beirut, 1st ed., 2009 CE.
Yaqut al-Hamawi, Shihab al-Din al-Rumi (574-626 AH), Mu'jam al-Buldan (Dictionary of Countries), Dar Sadir, Beirut, Second Edition, 1995 CE.