Al-Suyilti mentions that Ibn Ashtah reports in his book, al-Ma$a/:tif, that al-Layth b. Sad said: "The first person [to order] the collection of the Quran was Abu Bakr, and Zayd [b. Thabit] wrote it. ... Umar reported the verse about the stoning, but Zayd did not write it, because Umar was alone" [in maintaining that it was part of the Quran]. ٨
The verse about the stoning [of the fornicator], which Umar claimed to be part of the Quran, and which was not accepted as such, has been transmitted in several variants [in the books on the tradition]:

If a [married] man and a woman commit adultery, then certainly stone them-a warn‌
ing from God. God is Mighty and Wise.

A [married] man and a woman--certainly stone them because of what they have done to [fulfill] the lust.

If a [married] man and a woman commit adultery, then stone them without any hesitation.

Whatever the case, there is nothing in the Quran to deduce the injunction about ston‌ ing. Hence, if the tradition is authentic, then, undoubtedly, a verse from the Quran has been lost.

٢. AI-Tabarani has related an authenticated tradition that goes back to Umar b. al‌ Khattab, who said, "The Quran consists of ١,٠٢٧,٠٠٠ words."٩ However, the Quran that is in our hands does not reach even one-third this number; hence, two-thirds of the Quran is missing.

٣. It has been related, by Ibn Abbas, that Umar said:

Verily, God, the Exalted and Glorified, sent Mul:lammad with the truth, and sent with him the Book. Among those [verses] revealed to him was the verse about the stoning. Thus, the Messenger of God (peace be upon him and his progeny) stoned [the fornica‌ tor] and we stoned after him.

Then he said:

We used to read [the verse in the Quran], "Do not awaken an aversion toward your fathers, because it is disbelief," or, "It is disbelief for you if you awaken an aversion toward your father."١٠

٤. It has been related by Nafi that [AbdAllah] b. Umar said: "Verily, someone among you would say, I have acquired the complete Quran, and would not know its complete extent. Much of the Quran has gone, and, accordingly, he should say,
I have acquired what has appeared from it."١١

٥. Urwa b. al-Zubayr related on the authority of Aisha, who said: "The Sarat al‌ AI:).zab that used to be recited during the lifetime of the Prophet (peace be upon him and his progeny) was two hundred verses. But when Uthman [ordered] the compi‌ lation of the codices, we could not count in it except what is there now."١٢

٦. l:famida bint Abi Yunus said:

My father, who was eighty years old at that time, read to me [the following verse}from
..b.ishas codex: "Indeed God and His angels bless the Prophet. ٠ you who believe!