and [He] says, Exalted is He: “Never say of anything, ‘I will certainly do this tomorrow,’ without adding, ‘if Allah wills.’” [al-Kahf: 24]
And He says, Exalted is He: “So do not declare yourselves pure; He knows best who is truly God-fearing.” [al-Najm: 32] The believers will be in Paradise. When the Messenger of Allah ﷺ entered the graveyard, he said: “Indeed, if Allah wills, we shall join you.”
It is also reported from him: “Part of the completeness of a person’s faith is that he makes an exception in all his speech.”
It is reported from Umar ibn al-Khattab: “Whoever says, ‘I am truly a believer,’ is truly a disbeliever.”
It is reported from Ali and Ibn Masud: “Making an exception.” The same is reported from Aishah.
Ibn Abi Mulaykah said: “I met such-and-such a number of the Companions of the Messenger of Allah ﷺ; not one of them died without fearing hypocrisy for himself.”
Among the Successors were: Tawus, al-Hasan, Muhammad ibn Sirin, Ibrahim al-Nakha'i, Abu al-Bakhtari Sa'id ibn Fayruz, al-Dahhak al-Mashriqi, al-A'mash, Mansur, Isma'il ibn Abi Khalid, Ata ibn al-Sa'ib, Hamzah al-Zayyat al-Maghribi, Umarah ibn al-Qa'qa', Mughira ibn Miqsam, Yazid ibn Abi Ziyad, Layth ibn Abi Sulaym, and Muhill ibn Khalifah.