Hadeeth Related by al-Bukhari and Muslim.
On the authority of Abu Hurayrah (may Allah be pleased with him) who said:
I heard the Messenger of Allah (peace and blessings of Allah be upon him) say,
“What I have forbidden for you, avoid. What I have ordered you [to do], do as much of it as you can. For verily, it was only the excessive questioning and their disagreeing with their Prophets that destroyed [the nations] who were before you.”
Related by al-Bukhari and Muslim.