Follow commandments given by Allah SWT, Pray with correct posture as prescribed by Islam .

This hadith is about the importance of following the correct way of praying and how it was changed over time. It tells us that when Mus'ab b. Sa'd b. Abu Waqqas prayed by his father's side he intertwined his fingers and placed them between his knees which was not allowed in prayer according to Islamic teachings at that time. His father then struck his hands to remind him to lift them up to his knees instead as this is what they were commanded to do at that time in order for their prayer to be accepted by Allah SWT. This hadith teaches us that we should always follow the commandments given by Allah SWT and strive to pray in a manner prescribed by Him so our prayers are accepted and rewarded accordingly.