According to search-discovered classical Islamic scholarship, the Quranic concept of conduct 'towards others' is a cornerstone of the faith, encapsulated in the principles of *Huquq al-Ibad* (the rights of others) and *Adab* (noble etiquette). A thematic synthesis of verses from Surah Al-Isra and Surah Al-Mumtahanah reveals a comprehensive framework for interpersonal relations. Ibn Kathir's tafsir on these verses highlights the importance of financial justice towards kin and the needy, balanced with the avoidance of extravagance. Al-Qurtubi's commentary emphasizes the legal and social obligations of fair dealings and compassionate speech. Al-Tabari provides the linguistic and contextual foundation for understanding these commands. The collective guidance from these verses and scholars establishes that righteous conduct towards all of creation is an inseparable aspect of a Muslim's worship and a primary indicator of their faith.