Shaykh Ibn Uthaymeen mentioned two mistakes in prayer that have no origin for it:

  1. Those who start the prayer, Say Allah Akbar and then drop their hands to the side and then raise them back up and put their right on their left.
  2. The second one is while the person is standing he grabs his elbow whilst the Sunnah is to place it on the elbow and not grab.

[Sharhul Mumtia 43-45]

Translated by

Majid Jawed Al-Afghanee
Abu Layl