Allah said,

﴿ظˆظژظ…ظژظ†ظ’ ط£ظژط¸ظ’ظ„ظژظ…ظڈ ظ…ظگظ…ظ‘ظژظ†ظگ ط§ظپظ’طھظژط±ظژظ‰ ط¹ظژظ„ظژظ‰ ط§ظ„ظ„ظ‘ظژظ‡ظگ ظƒظژط°ظگط¨ط§ظ‹﴾

(And who can be more unjust than he who invents a lie against Allah,) Therefore, none is more unjust than one who lies about Allah claiming that He has partners or a son, or falsely claiming that Allah sent him as a Prophet;

﴿ط£ظژظˆظ’ ظ‚ظژط§ظ„ظژ ط£ظڈظˆظ’ط­ظگظ‰ ط¥ظگظ„ظژظ‰ظ‘ظژ ظˆظژظ„ظژظ…ظ’ ظٹظڈظˆط­ظژ ط¥ظگظ„ظژظٹظ’ظ‡ظگ ط´ظژظ‰ظ’ط،ظŒ﴾

(or says: "I have received inspiration,'' whereas he is not inspired with anything;) `Ikrimah and Qatadah said that this Ayah was revealed about Musaylimah Al-Kadhdhab.

﴿ظˆظژظ…ظژظ† ظ‚ظژط§ظ„ظژ ط³ظژط£ظڈظ†ط²ظگظ„ظڈ ظ…ظگط«ظ’ظ„ظژ ظ…ظژط¢ ط£ظژظ†ظژط²ظ„ظژ ط§ظ„ظ„ظ‘ظژظ‡ظڈ﴾

(and who says, "I will reveal the like of what Allah has revealed.'') This refers to he, who claims that the lies he invents rival the revelation that came from Allah. In another Ayah, Allah said,

﴿ظˆظژط¥ظگط°ظژط§ طھظڈطھظ’ظ„ظژظ‰ ط¹ظژظ„ظژظٹظ’ظ‡ظگظ…ظ’ ط،ظژط§ظٹظژظ€طھظڈظ†ظژط§ ظ‚ظژط§ظ„ظڈظˆط§ظ’ ظ‚ظژط¯ظ’ ط³ظژظ…ظگط¹ظ’ظ†ظژط§ ظ„ظژظˆظ’ ظ†ظژط´ظژط¢ط،ظڈ ظ„ظژظ‚ظڈظ„ظ’ظ†ظژط§ ظ…ظگط«ظ’ظ„ظژ ظ‡ظژظ€ط°ظژط¢﴾

(And when Our verses (of the Qur'an) are recited to them, they say: "We have heard this (the Qur'an); if we wish we can say the like of this.'')