﴿ وَمَآ أُمِرُوٓا۟ إِلَّا لِيَعْبُدُوا۟ ٱللَّهَ مُخْلِصِينَ لَهُ ٱلدِّينَ حُنَفَآءَ وَيُقِيمُوا۟ ٱلصَّلَوٰةَ وَيُؤْتُوا۟ ٱلزَّكَوٰةَ ۚ وَذَٰلِكَ دِينُ ٱلْقَيِّمَةِ ﴾

“And withal, they were not enjoined aught but that they should worship God, sincere in their faith in Him alone, turning away from all that is false; and that they should be constant in prayer; and that they should spend in charity: for this is a moral law endowed with ever-true soundness and clarity.”

The true religion of God is that according to which man should pray to and worship the one and only God; he should love and admire God from the bottom of his heart; he should consistently say his prayers and pay zakat (prescribed alms-giving). This is the real religion which comes from God. The best of all are those who adopt this correct religion and the worst are those who do not do so, or who devise another religion instead of the proper one and call the new religion the true religion.