Ad-Dahhak said that Ibn `Abbas said that Allah's statement,
﴿ إِلَّآ أَمَانِىَّ ﴾
(But they trust upon Amani) means, "It is just a false statement that they utter with their tongues.'' It was also said that Amani means `wishes and hopes'. Mujahid commented, "Allah described the Ummiyyin as not understanding any of the Book that Allah sent down to Musa, yet they create lies and falsehood.'' Therefore, the word Amani mentioned here refers to lying and falsehood. Mujahid said that Allah's statement,
﴿ وَإِنۡ هُمۡ إِلَّا يَظُنُّونَ ﴾
(And they but guess) means, "They lie.'' Qatadah, Abu Al-`Aliyah and Ar-Rabi` said that it means, "They have evil false ideas about Allah.''
ICTruth.info