Hadith.5143 - The Messenger of Allah سبحانه وتعالى (peace be upon him and his family) said:
"It is not permissible for a ruler who believes in Allah سبحانه وتعالى and the Last Day to administer more than ten lashes except in the case of a legal punishment (hadd)."
It is permitted to discipline a servant with three to five lashes. However, whoever strikes his servant beyond what is due without a valid reason has no expiation except to free him.