Someone asked if we can do good deeds on behalf of others, e.g. pray Quran on behalf of deceased parents. There is no such evidence that the Prophet (pbuh) or the companions or the salaf or kalaf ever prayed Quran on behalf of deceased people. Similarly, there is no evidence to support that one can give his reward to another living person.
Allah (swt) mentioned that he not only revealed the Quran to the Prophet (ﷺ) but its correct understanding and interpretation. To understand why the sunnah is so important, we will explore all these references from Quran, and review what Prophet (ﷺ) said regarding it. We will also review the stand of companions of Prophet towards sunnah, and those who followed them in their path.