It was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) said: "Seeking knowledge is a duty upon every Muslim, and he who imparts knowledge to those who do not deserve it, is like one who puts a necklace of jewels, pearls and gold around the neck of swines."Note: "Seeking knowledge is a duty upon every Muslim" is authentic through many sources, but the remaining text is not acceptable.