Sheikh Nasir-ud-Din al-Albani (1914–1999) was a prominent 20th-century Islamic scholar known for his expertise in hadith sciences. Originally from Albania and later residing in Syria, he became a respected authority in authenticating hadiths and was largely self-taught. His major works, like Silsilat al-Ahadith as-Sahihah (The Series of Authentic Hadiths) and Silsilat al-Ahadith ad-Da'ifah (The Series of Weak Hadiths), aimed to help Muslims distinguish authentic prophetic traditions. Al-Albani’s rigorous methodology in hadith criticism and his advocacy for following authentic sources significantly influenced contemporary Islamic thought, especially within Salafi circles.