Stick to what has been taught by Prophet Muhammad and avoid any kind of innovation or addition to our prayers .

This hadith is about the importance of not introducing innovations in prayer. It was narrated by Sad bin Tariq who asked his father if they recited Qunut during Fajr prayer when they prayed behind the Prophet Muhammad and other caliphs. His father replied that it was an innovation and therefore should be avoided. This hadith teaches us that we should stick to what has been taught by Prophet Muhammad and avoid any kind of innovation or addition to our prayers as it is considered a sin according to Islamic teachings. We should also be careful not to introduce any new practices into our religion as this could lead us astray from the true path of Islam.