Verily! The worst of moving living creatures in the Sight of Allah are the deaf and the dumb, those who understand not - the disbelievers." Al-Qur'an 8:22 In this verse Allah Almighty calls the person who do not respond to the truth as deaf, and the person who do not understand and utter the truth as dumb and refers to them as people who do not understand because they do not have sound minds that think about the outcome of their actions. Their minds are limited to thoughts about this world and its short-term pleasures. They are like cattle, who only think about what it eats, and does not think about the future and prepare for another life. They are not only like cattle but even worse, because cattle obey Allah in reasons of its creation. This is reflected in Surah al-Furqan where it says: "They are only like cattle - nay, they are even further astray from the Path - even worse than cattle." Al-Qur'an 25:44
