This statement is narrated from Abu Bakr al-Siddiq and from Ali ibn Abi Talib, may Allah be pleased with them both.
Abu al-Layth al-Samarqandi mentioned from Umar, Uthman, and Ibn Mas'ud that they said: The disjointed letters (al-huruf al-muqatta'a) are among that which is hidden and is not to be interpreted.
34: 54: That: 1: Ibn Kathir said: And the Book: the Qur'an. And whoever said: That the intended meaning of "that Book" is a reference to the Torah and the Gospel, as narrated by Ibn Jarir and others, then he has gone far in his quest, has been excessive in his interpretation, and has burdened himself with that for which he has no knowledge. (Al-Tafsir: 1/39).
55: Eternal: 2: Al-Qurtubi said regarding His saying, the Almighty: "No doubt" (la rayba fihi), it is a general negation, and that is why 'rayb' is put in the accusative case (mansub) by it. Regarding 'rayb', there are three meanings:
The first: Doubt. Abdullah ibn al-Ziba'ra said: There is no doubt in the truth, oh Umayma, only doubt is that which the ignorant one says.
The second: Suspicion (accusation). Jamil said: Buthayna said, 'Oh Jamil, you have made me suspicious (arabtini),' so I said, 'Both of us, oh Buthayna, are suspicious.'
The third: Need. Ka'b ibn Malik al-Ansari said: We have fulfilled every need (rayb) from Tihama and Khaybar, then we gathered the swords.
So the Book of Allah, the Almighty, there is no doubt in it, nor any suspicion. The meaning is: It is in itself truth, and it is revealed from Allah, a quality from His qualities, neither created nor originated, even if doubt arises for the disbelievers. It is also said: It is an informative statement (khabar), and its meaning is an interdiction (nahy), i.e., let them not doubt.