Zayd bin Thabit reported,

When we were copying the pages into the official codices, I could not find a verse from Surah al-Ahzab that I used to hear the Messenger of Allah ﷺ reciting. I did not find it with anyone except Khuzaymah al-Ansari, whose testimony the Messenger of Allah ﷺ had made equivalent to the testimony of two men. The verse was "Among the believers are men who have been true to their covenant with Allah" [Ahzab 33:23].

Azami 13047

Sahih

عن زيد بن ثابت قال

لما نسخنا الصحف في المصاحف فقدت آية من سورة الأحزاب كنت أسمع رسول الله ﷺ يقرؤها لم أجدها مع أحد إلا مع خزيمة الأنصاري الذي جعل رسول الله ﷺ شهادته شهادة رجلين {من المؤمنين رجال صدقوا ما عهدوا الله عليه}

الأعظمي 13047صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Tafsir of Surah Ahzab
Section
His saying, "Among the believers are men true to what they promised Allah. Among them is he who has fulfilled his vow, and among them is he who awaits, and they did not alter by any alteration"
Numbering
Jami al-Kamil 13047 (2nd edition)
Azami 13047