Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:10493Aḥmad b. Ḥarb > Abū Muʿāwiyah > al-Aʿmash > Shaqīq

[Machine] Abdullah said, "The Messenger of Allah ﷺ used to say, 'None of you should say, 'I have forgotten such and such verse,' rather he has been made to forget."  

الكبرى للنسائي:١٠٤٩٣أَخْبَرَنَا أَحْمَدُ بْنُ حَرْبٍ قَالَ حَدَّثَنَا أَبُو مُعَاوِيَةَ عَنِ الْأَعْمَشِ عَنْ شَقِيقٍ قَالَ

قَالَ عَبْدُ اللهِ وَكَانَ رَسُولُ اللهِ ﷺ يَقُولُ لَا يَقُلْ أَحَدُكُمْ إِنِّي نَسِيتُ آيَةَ كَذَا وَكَذَا بَلْ هُوَ نُسِّيَ