Al-Muwatta is one of the earliest collections of Hadith and Islamic law, compiled by Imam Malik bin Anas.

Abu Hamid Muhammad ibn Muhammad al-Ghazali is widely titled Hujjat al-Islam for his immense contributions to Islamic philosophy and theology.

Ibn Sina, known as Avicenna in the West, authored the monumental medical text 'The Canon of Medicine'.

Muhammad ibn Isma'il al-Bukhari compiled the collection Sahih al-Bukhari, considered the most authentic source of Sunnah.

Ibn Rushd, a famous Andalusian polymath, wrote this book to refute Al-Ghazali's 'The Incoherence of the Philosophers'.

Ibn Khaldun is considered the father of modern historiography and sociology due to his work, the Muqaddimah.

Imam Muhammad Idris ash-Shafi'i studied under Imam Malik bin Anas in Medina and later founded the Shafi'i school.

Abu al-Hasan al-Ash'ari founded the Ash'ari school, which became the dominant theological school in Sunni Islam.

Taqi al-Din ibn Taymiyyah was a prominent Hanbali scholar known for his emphasis on returning to the Quran and Sunnah.

Imam Muhammad ibn Jarir al-Tabari is renowned for his comprehensive commentary on the Quran and his monumental historical work.

Dawud al-Zahiri established the Zahiri madhhab, which rejects analogy (qiyas) in favor of the explicit text.

Abu al-Hasan al-Mawardi is famous for his classic treatise on Islamic political theory and governance.

Ibn Sina, known as Avicenna, wrote the expansive philosophical encyclopedia 'Al-Shifa'.

Abu Mansur al-Maturidi established the Maturidi school, which is widely followed among Sunni Muslims in Central and South Asia.

Imam Al-Ghazali authored 'Ihya Ulum al-Din', which seeks to integrate Sharia and Sufism.

Imam Shafi'i is famously known as the architect of the methodology of Islamic law in his foundational book 'Al-Risalah'.

Ibn Arabi, known as 'Al-Shaykh al-Akbar', authored 'Fusus al-Hikam', a seminal text in Islamic mysticism.

Imam Al-Nawawi is a highly respected Shafi'i jurist and hadith scholar, famous for 'Al-Majmu' and his collection of '40 Hadith'.

Ibn Taymiyyah was an influential and often controversial scholar who advocated for a return to the pristine practices of the early generations.