A common mistake some people make when they pray salah/namaz is that when they are in sajda/prostration, they lift their toes up off the ground. However, we are required to keep our toes touching the ground as we have been ordered to prostrate upon seven limbs and the toes are counted as 2 of them! Furthermore, it’s recommend (but not required) to try to point your toes towards the qiblah while in sajda too!