In a Hadith, Mu'adh bin Jabal relates that Prophet Muhammad ﷺ told him, "If anyone testifies sincerely that there is no god except Allah, and Muhammad is His slave and Messenger, truly from his heart, Allah will safeguard him from Hell."
Mu'adh replied, "O Messenger of Allah, shall I inform people of this good news." The Prophet ﷺ told Mu'adh not to and continued, "Then they will rely on it alone and thus give up good works altogether."
The lesson from this hadith is the importance of balancing faith with sincere, righteous actions. While belief in Allah's oneness and Muhammad's prophethood is fundamental, it is not enough. Good deeds and actions are imperative. The Quran repeatedly mentions "those who believe and do good deeds."
True faith should translate into a life of righteousness and virtue. Believers should strive to live by the teachings of divine guidance, demonstrating their faith through their actions.
The ultimate judgment is in the hands of Allah and is based on a person's overall faith, actions, sincerity, and, most of all, the Mercy of Allah.