According to search-discovered classical Islamic scholarship, 'kindness towards others' (Husn al-Khuluq) is a fundamental tenet of Islam, encompassing excellent moral character and righteous conduct towards all of creation. This concept is epitomized in Quran 4:36, which directly links the worship of Allah with showing kindness (Ihsan) to parents, relatives, orphans, the needy, neighbors, companions, travelers, and those under one's care. Classical commentators like Al-Tabari, Al-Qurtubi, and Ibn Kathir affirm that this verse establishes the inseparability of faith and social responsibility. The Prophet Muhammad's life serves as the ultimate example of Husn al-Khuluq, and he stated that he was sent to perfect good character. Therefore, kindness in Islam is not merely a suggestion but a vital component of a believer's faith, with deep spiritual rewards and societal benefits.