Al-Ma'idah · 5:104

104. When it is said to these people who make up lies about Allah, with respect to forbidding certain livestock: Come towards the Qur’ān that Allah revealed and to the path of the Messenger (peace be upon him), so that you can learn the lawful and the unlawful – they say: The beliefs, statements and actions we have taken and inherited from our predecessors is enough for us. How could this be enough for them when their predecessors did not know anything and were not guided to the truth? Only the person who is more ignorant and misguided than them follows them.