this verse is from surat ul ahzab, part of verse 6

النَّبِيُّ أَوْلَىٰ بِالْمُؤْمِنِينَ مِنْ أَنْفُسِهِمْ ۖ وَأَزْوَاجُهُ أُمَّهَاتُهُمْ ۗ

The Prophet has a greater claim on the faithful than they have on themselves, and his wives are (as) their mothers;

let us see what sahih narrations tell us if this verse had something added to it or not

we find ibn hajar saying

قال إسحاق : أنا عبد الرزاق ، أنا ابن جريج ، أخبرني عمرو بن دينار ، عن بجالة التميمي ، قال : « وجد عمر بن الخطاب مصحفا في حجر غلام له فيه : » النبي أولى بالمؤمنين من أنفسهم وهو أب لهم وأزواجه أمهاتهم « ، فقال : احككها يا غلام ، فقال : والله لا أحكها ، وهي في مصحف أبي بن كعب فانطلق عمر إلى أبي بن كعب ، فقال : شغلني القرآن ، وشغلك الصفق بالأسواق أن تعرض رحاك على عنقك بباب ابن العجماء » هذا إسناد صحيح على شرط البخاري

tamimi said that umar saw a copy of quran with his slave, and in that was written [The Prophet has a greater claim on the faithful than they have on themselves, and he is their father, and his wives are (as) their mothers],

so he told him: wipe it o slave;

but he said, i wont do it, it is in the copy of abi bin kaab

so umar went to him and said: i had been busy with quran and you are roaming around in the market to have your business at the doors of ajams (non-arabs)

ibn hajar says the isnaad are sahih on the condition of bukhari

[al-matalib-ul-aalia, vol 10, page 385, narration 3777]

keep in mind that abi bin kaab was one of those who had compiled quran in the life  time of holy prophet as we see in sahih bukhari

Volume 6, Book 61, Number 525:

Narrated Qatada:

I asked Anas bin Malik: “Who collected the Qur’an at the time of the Prophet ?” He replied, “Four, all of whom were from the Ansar: Ubai bin Ka’b, Mu’adh bin Jabal, Zaid bin Thabit and Abu Zaid.”

and also, keep in mind that this recitation was not limited to ibn kaab, rather we find in authentic tafsir, tafsir ibn abi hatim, vol 9, page 3115, narration 17588 that this was was how mujahid also recited it

and ibn abbas also followed this in addition to abi bin kaab; this is clear from the saying of ibn kather who said this

وقد روي عن أبي بن كعب وابن عباس رضي الله عنهما: أنهما قرآ: (النبي أولى بالمؤمنين من أنفسهم وأزواجه أمهاتهم وهو أب لهم)

so, not only abi bin kaab, but ibn abbas also added these words