What a wretched person is he amongst them who says: I have forgotten such and such a verse. (He should instead of using this expression say): I have been made to forget it. Try to remember the Qur'an for it is more apt to escape from men's minds than a hobbled camel.  

قَالَ رَسُولُ اللَّهِ ﷺ بِئْسَمَا لأَحَدِهِمْ يَقُولُ نَسِيتُ آيَةَ كَيْتَ وَكَيْتَ بَلْ هُوَ نُسِّيَ اسْتَذْكِرُوا الْقُرْآنَ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنْ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ بِعُقُلِهَا  

[Machine] The Messenger of Allah ﷺ said, "Remember the Quran, for it is sharper and more penetrating than the chests of men. How terrible it is for one of you to say, 'I have forgotten an Ayah (verse), but I will not forget a poem or a song.' Rather, he has forgotten."  

قَالَ رَسُولُ اللَّهِ ﷺ «اسْتَذْكِرُوا الْقُرْآنَ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنْ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ مِنْ عُقُلِهَا وَبِئْسَمَا لِأَحَدِكُمْ أَنْ يَقُولَ نَسِيتُ آيَةَ كَيْتَ وَكَيْتَ مَا نَسِيَ وَلَكِنْ نُسِّيَ»  

The Prophet ﷺ said: "It is not right for any one of you to say: 'I have forgotten such and such a verse.' Rather, he has been caused to forget. Study the Qur'an, for it escapes from the heart of man faster than a camel escapes from its fetter. " (Using translation from Nasāʾī 943)   

قَالَ رَسُولُ اللَّهِ ﷺ «اسْتَذْكِرُوا الْقُرْآنَ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنْ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ مِنْ عُقُلِهَا وَبِئْسَمَا لِأَحَدِكُمْ أَنْ يَقُولَ نَسِيتُ آيَةَ كَيْتَ وَكَيْتَ بَلْ هُوَ نُسِّيَ»  

[Machine] From the Prophet ﷺ , he said, "Commit yourselves to the Quran, for it is more detailed in its understanding than the chests of men and more beneficial to the mind than wealth."  

عَنِ النَّبِيِّ ﷺ قَالَ «تَعَاهَدُوا الْقُرْآنَ؛ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنْ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ مِنْ عُقُلِهَا»  

[Machine] The Messenger of Allah, ﷺ , said: "Remember the Quran, for it is sharper in penetrating the hearts of men than iron is in piercing their bodies. And how terrible is it for one of you to say, 'I have forgotten a verse!' when indeed it has been forgotten."  

قَالَ رَسُولُ اللهِ ﷺ اسْتَذْكِرُوا الْقُرْآنَ؛ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنْ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ مِنْ عُقُلِهَا وَبِئْسَمَا لِأَحَدِكُمْ أَنْ يَقُولَ نَسِيتُ آيَةَ كَيْتَ وَكَيْتَ بَلْ هُوَ نُسِّيَ  

[Machine] "Preserving the Qur'an is more intricately detailed than the thoughts and intellect of men are careful about their blessings."  

«تَعَاهَدُوا الْمَصَاحِفَ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنَ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ مِنْ عُقُلِهَا»  

What a wretched person is he amongst them who says: I have forgotten such and such a verse. (He should instead of using this expression say): I have been made to forget it. Try to remember the Qur'an for it is more apt to escape from men's minds than a hobbled camel. (Using translation from Muslim 790a)   

اسْتَذْكِرُوا الْقُرْآنَ فَلَهُوَ أَشَدُّ تَفَصِّيًا مِنْ صُدُورِ الرِّجَالِ مِنَ النَّعَمِ مِنْ عُقُلِهِ وَلَا يَقُولَنَّ أَحَدُكُمْ نَسِيتُ آيَةَ كَيْتَ وَكَيْتَ قَالَ قَالَ رَسُولُ اللهِ ﷺ «بَلْ هُوَ نُسِّيَ»  

"بئْسَمَا لأحَدِكُمْ أنْ يَقولَ: نَسيتُ آيةَ كيتَ، وَكيتَ، بَلْ هُوَ نُسِّى، اسْتَذْكِرُوا القرآنَ، فَوَالَّذِى نَفْسِى بِيَدِهِ لَهُوَ أَشَدُّ تَفصِّيًا مِنْ صُدُورِ الرِّجَالِ مِن النَّعَم مِن عُقُلِهَا".