Abdur Rahman bin 'Abdullah bin Dinar عبد الرحمن بن عبد الله بن دينار · General Behavior (Kitab Al-Adab)

The Prophet (ﷺ) said: Allah, Most High, has removed from you the pride of the pre-Islamic period and its boasting in ancestors. One is only a pious believer or a miserable sinner. You are sons of Adam, and Adam came from dust. Let the people cease to boast about their ancestors. They are merely fuel in Jahannam; or they will certainly be of less account with Allah than the beetle which rolls dung with its nose.

An ant stung a prophet. He ordered a colony of ants to be burned. Allah revealed to him : because an ant stung you, you have perished a community which glorifies Me.