"...Leave that about which you are in doubt for that about which you are in no doubt"
Al-Hasan bin Ali who said: I committed to memory from the Messenger of Allah, sallallahu alayhi wasallam, (the following words): "Leave that about which you are in doubt for that about which you are in no doubt." [Al-Tirmidhi and al-Nasaii related it, and al-Tirmidhi said: It is a good and genuine Hadith]. Truth will lead to tranquility and falsehood will lead to doubt. We must all act and do what is permissible and proper.