What is the ruling on children repeating, "The liar goes to Hell, and they'll drag him like a donkey" when they see a lie, and should they be prohibited from doing so?

Lying is a major sin, one of the greatest of the major sins. There are religious texts that explain its evil consequences. In the Hadith from the Prophet, peace and blessings be upon him, lying leads to wickedness and indicates hypocrisy. Its perpetrator is tormented in his grave, and on the Day of Resurrection, he will be cast into the Fire, and his entrails will spill out, so he will spin as a donkey spins with its millstone. Allah Almighty describes liars as being like cattle; in fact, they are even more astray. It is mentioned in the Holy Quran that those who denied Allah's signs were likened to a donkey carrying books. Therefore, lying is condemned in general and in detail, and there is general evidence to support this, aiming to raise children to detest lying and avoid it.