Sa’eed bin Al-Musayyab saw someone performing more than two rak’ahs in Fajr prayer and making a lot of bowing and prostration, so he stopped him.  The man retorted, “Abu Muhammad, is Allah going to punish me for performing prayer?!”

Sa’eed simply said, “No, but He is going to punish you for going against the Sunnah.”

Sunan al-Bayhaqee al-Kubraa 2/466

(Read on pg 86-87, Salaahud-Deen ibn ‘Alee ibn ‘Abdul-Mawjood, Imam Sa’eed bin Al-Musayyab (Biography). Darussalam Publishers. Riyadh:2006.)