Translation of the verse 8 from Surah Saba’ : Number of verses 54 - - page 429 - Part 22.
Has he (Muhammad SAW) invented a lie against Allah, or is there a madness in him? Nay, but those who disbelieve in the Hereafter are (themselves) in a torment, and in far error.
Has he invented about Allah a lie or is there in him madness?" Rather, they who do not believe in the Hereafter will be in the punishment and [are in] extreme error.
(34:8) Has he forged a lie against Allah, or is he afflicted with madness?' *10 Nay, but those who do not believe in the Hereafter are doomed to be chastised and are far gone in error. *11
*10) The chiefs of the Quraish knew full well that it was extremely difficult for the common people to accuse Muhammad (upon wham be Allah' peace) of being a liar, for the whole nation knew that he was a completely truthful person, and no one had ever heard a lie from him all his life. Therefore, they presented their charge against him before the people like this: 'When this person utters an impossible thing like the life-after-death from his mouth, he is either uttering (God forbid) a falsehood deliberately, or he is mad.' But this accusation of madness also was as absurd as of falsehood, for a stupid person only could admit that such a wise and intelligent man as the Holy prophet could be mad. That is why Allah did not feel it was necessary to refute their absurd charge by an argument, and only made mention of their wonder which they expressed at the possibility of the I ife-after-death