Imams(as) ordered us to read the Uthmani Mushaf

Al Jazairi writes:

“If one should be asking, how reading in it can be permitted, while it has been subjected to changes, i say that it has been transmitted in the reports that the Imams (as) ordered their followers to read this existing Qur’an in prayer and outside of it and to act according to its judgements until our Master, the Master of Time (as),appears, whereupon this Qur’an ascends from the hands of men into heaven and the Qur’an is brought forth, which the Commander of the Faithful (as) wrote, so that it may be read and acted upon according to his judgments.” 

📚Al-Anwar-un-Numaniyyah, V2, P317

 Abd-ur-Rahman Ibn Abi Hashim reported that Salim Ibn Salamah said: “Someone was reading near Abu Abdillah (As-Sadiq) while I was listening to Qur’anic wordings which people do not read like that.” Then Abu Abdillah (a.) said: “Do not read in this way. Read as the people read until the Riser (Qa’im) rises. When the Riser rises, he reads the scripture of God in its limits and brings forth the codex (Mus’haf) that Ali (as) wrote down.” He said: “Ali (as) brought it out to the people when he finished it and wrote it down. So he said to them: “This is the scripture of God as God sent it down to Muhammad (s) and I have collected it from both tablets.” Then they said: “Here it is. We have a codex (Mus’haf) in which the Qur’an is collected. We do not need it.” So he said: “Behold, by God, you will never see it after this day of yours. It was only my duty to inform you as soon as I had collected it so that you could read it.”

📚Kitab Al Kafi V2,P350