Hudhayfah ibn al-Yamaan رضي الله عنه said:
“Do not perform any act of worship that was not practised by the Companions of the Messenger of Allah, for the earlier generation did not leave any room for the latter to add anything (to the religion). Fear Allah, O’ readers, seekers of knowledge, and follow the path of those who came before you.”
[Narrated by Ibn Battah in Al-Ibaanah]