According to search-discovered classical Islamic scholarship, the concept of the Righteous (As-Saliheen) represents the pinnacle of faith in practice, defining a person whose inner belief is manifested through holistic, virtuous conduct. The Quran's most comprehensive definition, in Surah Al-Baqarah 2:177, explicitly states that righteousness ('birr') transcends mere ritual, encompassing deep faith, cheerful charity, fulfillment of promises, and steadfast patience. Classical commentators like Ibn Kathir explain that this is a state of complete obedience to Allah, while Al-Tabari emphasizes the linguistic root 'ṣ-l-ḥ,' meaning to be sound, whole, and to reform, indicating that a righteous person is a source of goodness for themselves and society. Further descriptions, such as the 'Servants of the Most Merciful' in Surah Al-Furqan, detail their qualities of humility, night prayers, moderation, and avoidance of major sins. The synthesis of these Quranic descriptions and scholarly interpretations establishes the Saliheen as those who have achieved spiritual soundness and whose lives are a testament to their faith.