Translation of the verse 9 from Surah Al-Qamar : Number of verses 55 - - page 529 - Part 27.
The people of Nuh (Noah) denied (their Messenger) before them, they rejected Our slave, and said: "A madman!" and he was insolently rebuked and threatened.
The people of Noah denied before them, and they denied Our servant and said, "A madman," and he was repelled.
(54:9) Before them Noah's people also gave the lie (to his Message). *9 They rejected Our servant as a liar, saying: 'He is a madman'; and he was rebuffed. *10
*9) That is, `They denied that the Hereafter has to take place when man will have to render an account of his deeds; they denied the Prophethood of the Prophet who was making his people aware of this truth; and they denied the teaching of the Prophet, which taught them what to believe and what creed and conduct they should adopt in order to pass the reckoning of the Hereafter."
*10) That is, "The people not only belied the Prophet but also branded him as a madman; they uttered threats against him, showered him with curses and abuses; and did whatever possibly they could to stop him from preaching the truth, and thus made life extremely difficult for him.