Salman al-Farsi, a companion of Persian origin, proposed the innovative defensive tactic of digging a trench to protect Medina from the invading confederate forces. This strategy was successfully adopted by the Muslims, effectively neutralizing the enemy's superior cavalry and leading to a stalemate that forced the attackers to retreat.

This famous medical maxim is attributed to the ancient Greek physician Hippocrates. It reflects the principle that in cases of severe illness, aggressive or drastic medical interventions may be necessary to save the patient's life, a concept that has influenced medical ethics and practice for centuries.

Aristotle was a polymath and student of Plato who made extensive contributions to biology, logic, and ethics. He is often considered the father of zoology for his systematic classification of living organisms. His intellectual influence was profound, and his role as the tutor to Alexander the Great helped shape the young king's worldview, which later influenced the spread of Hellenistic culture across the ancient world.

Hippocrates of Kos is traditionally honored as the 'Father of Medicine' in Western history. His contributions to clinical observation, medical ethics, and the systematic study of diseases established the foundational principles for the medical profession, distinguishing it from superstition and philosophy.

Haji Shariatullah, the founder of the Faraizi movement, declared Bengal to be Darul Harb (land of war) under British rule. He argued that because the region was no longer under Muslim governance, the conditions necessary for the performance of congregational prayers, specifically the Friday (Jumu'ah) and Eid prayers, were not met, thus exempting Muslims from these obligations.

Sir Syed Ahmad Khan authored 'The Loyal Muhammadans of India' in the mid-19th century. The work was intended to demonstrate the loyalty of Indian Muslims to the British Crown following the events of the 1857 Indian Rebellion, aiming to improve communal relations.

Sir Syed Ahmad Khan, a visionary reformer and educator, became increasingly skeptical of the Indian National Congress after its formation in 1885. He believed that the democratic processes advocated by the Congress would lead to the permanent political marginalization of Muslims in India, given their minority status. Consequently, he advised Muslims to focus on Western education and avoid active participation in the Congress to protect their community's distinct identity.

Sir Syed Ahmad Khan is widely recognized by historians for his early advocacy of the Two-Nation Theory. He argued that Muslims and Hindus were distinct communities with separate cultural, social, and political identities, which necessitated separate political representation. His efforts laid the intellectual foundation for the eventual demand for a separate Muslim homeland in the Indian subcontinent.

Tahzib al-Akhlaq, meaning 'Social Reform' or 'Refinement of Morals', was a highly influential journal established by Sir Syed Ahmad Khan to promote modern education and social reform among the Muslims of the Indian subcontinent.

Kimiya-e-Sa'adat, or 'The Alchemy of Happiness', is a famous work on spiritual development and ethics written by Imam Abu Hamid al-Ghazali, focusing on the purification of the heart and the path to divine proximity.