The religion is Sincere advice (Religion is nasihah)


On the authority of Tamim Al-Dari that the Prophet, sallallahu 'alayhi wasallam, said:
"Religion is nasihah." We said: "To whom?" The Prophet, sallallahu 'alayhi wasallam, said: "To Allah and His Book, and His messenger, and to the leaders of the Muslims and their common folk."  [Muslim]

The word "nasihah" cannot be accurately translated to English because it is a broad concept which cannot be traced in the English language. Some use the term "sincerity" but this is only part of the concept - to negate deception/cheating. According to Imam Ibnu al-Salah, nasihah is "truly seeking the best, in terms of intention and action, for the one whom he is making nasihah to".

This hadith is a profound statement as Sheikh Jamaal al-Din Zarabozo says that in this one brief statement the Prophet, sallallahu 'alayhi wasallam, described the essence of Islam. Nasihah hence forms the bulk and the most important pillar of Islam since it encompasses Islam, Iman and Ihsan.