Good deeds without faith hold no value and must be accompanied by true belief.
In the Holy Quran, good deeds hold great significance, and it is explicitly stated that faith and righteousness are intertwined. For instance, in Surah Al-Baqarah, verse 277, Allah states that goodness only holds meaning when accompanied by faith: "Indeed, the believers are those who believe in Allah and His messengers and then do not doubt and strive with their wealth and their lives in the cause of Allah. It is they who are the truthful." This verse clarifies that true believers are those who have faith in Allah and His messengers and exert effort for His cause. Moreover, in Surah Al-Mu'minun, verses 1 to 11, Allah describes true believers as those who are humble in their prayers, avoid vain talk, and give zakat, indicating that high ranks in paradise are guaranteed for them. Based on these verses, good deeds without faith in Allah and belief in religious principles cannot hold true value. Additionally, in Surah Al-Muzzammil, verse 20, Allah asks His servants to worship with attention to their faith. Hence, it can be concluded that when a good deed is performed without faith, it creates a fundamental difference, and a pure action cannot have the divine impact in word and deed.
Indeed, the believers are those who believe in Allah and His messengers and then do not doubt and strive with their wealth and their lives in the cause of Allah. It is they who are the truthful.
Certainly will the believers have succeeded.
Indeed, your Lord knows that you stand [in prayer] for less than two thirds of the night and the half of it and a third of it, and [some] among those with you. And Allah determines the extent of the night and the day. He knows that you will not be able to do it, so He has turned to you in mercy. So recite what is easy from the Quran.
One day, in the early days of Islam, a man named Hasan came to the Prophet Muhammad and said, "O Prophet, I am on the verge of doing a good deed, but my heart is not at peace and I lack faith in God." The Prophet replied, "A good deed must spring from a pure heart, and without faith, it is futile on the path. Hasan, let faith enter your heart and then perform good actions, for in that case, with faith, your good deeds will draw you closer to Allah's obedience." Hasan, heeding this advice, transformed within and embraced faith. He began performing all his good deeds with a pure heart, subsequently becoming one of the most beloved servants of Allah.