Ikrimah said: I said to Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both): I saw a foolish old man at al-Abtah who was saying the takbir when going into prostration and when raising his head. He said: "Is that not the prayer of the Messenger of Allah (peace and blessings be upon him)? May you lose your mother!"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11782