اللهم انك عفو كريم تحب العفو فاعف عني. ادعية اللهم انك عفوا تحب العفو فاعفوا عني مكتوبة

This slight variation is not the authentic sunnah of Prophet Muhammad ﷺ However, there is no support for these claims
With a loyal group of monthly supporters we'll be able to complete multiple educational projects that will help millions of people across the world learn about Islam This does not mean it is restricted to this one day

In Jami At-Tirmidhi 3513 there is some confusion as this hadith adds a variation to the dua with the word Kareem or Karim, which means the most kind or generous.

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What is Allahumma Innaka Afuwwun Full Dua? (With Meaning)
It is a dua which can be recited whenever one wishes to ask for forgiveness from their Lord
اللهم إنك عفو كريم تحب العفو فاعف عنى أفضل ذكر فى ليلة القدر
It occurs in one of the last ten nights of Ramadan
ادعية اللهم انك عفوا تحب العفو فاعفوا عني مكتوبة
It is a short surah with only 5 ayat
Support My Islam Alhamdulillah, we've met this years Ramadan goal and it's because of readers like you who've shown their support for us and our mission On this night, the instruction of Allah was revealed which is why this is such an important night
The Quran emphasizes the heaviness of this day, this one night is better than one thousands months which is greater than 83 years! Again Allah loves the believer who is humble and shows humility to ask for his forgiveness Similarly, reading the dua in Arabic or sticking with exact dua from Quran or keeping to authentic Prophet Muhammad narration would be better

Peace it is until the emergence of dawn.

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دعاء اللهم انك عفو كريم تحب العفو فاعف عنا مزخرف مكتوب
There are some which claim that this dua should be recited everyday of Ramadan
شرح معنى دعاء اللهم إنك عفو تحب العفو فاعف عني
From the hadith only specific day mentioned to recite this dua is for laylatul qadr
شرح معنى دعاء اللهم إنك عفو تحب العفو فاعف عني
The dua which adds the variation Kareem which is likely a mistake from a scribe would be rewarded
The difference, however, comes in rewards
And what can make you know what is the Night of Decree? The addition of Kareem, correct or incorrect? The angels and the Spirit descend therein by permission of their Lord for every matter To understand how important this night is we refer to the Quran,

More likely to be an odd-numbered night of the last 10 days.

اللهم إنك عفو كريم تحب العفو فاعف عنا
This does not make this dua wrong, Allah loves any act of worship and the niyyah or intent behind this dua is still pure
لم تثبت زيادة كلمة (كريم) في دعاء ليلة القدر
But on a scale of one to ten, this would be a level one dua
شرح دعاء اللهم إنك عفو كريم تحب العفو فاعف عني : دعاء ليلة القدر
From here we can see the importance of this night