Narrated Ubayy ibn Kab: The Prophet ﷺ read the Quranic verse: "Thou hast received (full) excuse from me (min ladunni)" and put tashdid (doubling of consonants) on nun (n).
Hadith Referenceسنن ابي داود / كتاب الحروف والقراءات / 3985
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف, إسناده ضعيف, ترمذي (2933), قال الترمذي:’’ غريب لانعرفه إلا من ھذا الوجه،وأبو الجارية العبدي البصري:مجهول،لا يعرف له اسم‘‘, انوار الصحيفه، صفحه نمبر 142
Hadith Takhrij« انظر ما قبلہ، (تحفة الأشراف: 42) (ضعیف) »
´Narrated Ibn 'Abbas:` from 'Ubayy bin Ka'b, that the Prophet (ﷺ) would recite: "Qad Balaghta Min Ladunni 'Udhra" (18:76) with heaviness (Muthaqqalah - meaning with Tashdid on the Nun in "Ladunni")."
Shaykh Dr. Abdur Rahman Freywai
Explanation: 1: The well-known recitation is in this manner, that is, with a shaddah (gemination) on the letter noon, but Nafi‘ and others have recited it as ﴿مِنْلَدُنِیْ﴾, that is, with only a simple kasrah (vowel) under the noon. In any case, the meaning is the same, that is, certainly you have conveyed the excuse from my side. (al-Kahf: 76) Note: (In the chain of narration, Abu al-Jariyah ‘Abdi is a majhul (unknown) narrator.)
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 2933