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.
bayhaqi:8561Abū ʿAbdullāh al-Ḥāfiẓ > Muḥammad b. Ṣāliḥ b. Hāniʾ > Abū ʿAmr al-Mustamlī > Qutaybah b. Saʿīd > ʿAbd al-Wāḥid b. Ziyād > al-Ḥasan b. ʿUbaydullāh > Ibrāhīm b. Yazīd > al-Aswad b. Yazīd > ʿĀʾishah

[Machine] The Prophet ﷺ used to exert great effort during the last ten nights of Ramadan, more than he would in any other time.  

البيهقي:٨٥٦١وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ ثنا مُحَمَّدُ بْنُ صَالِحِ بْنِ هَانِئٍ ثنا أَبُو عَمْرٍو الْمُسْتَمْلِي ثنا قُتَيْبَةُ بْنُ سَعِيدٍ ثنا عَبْدُ الْوَاحِدِ بْنُ زِيَادٍ عَنِ الْحَسَنِ بْنِ عُبَيْدِ اللهِ قَالَ سَمِعْتُ إِبْرَاهِيمَ بْنَ يَزِيدَ يَقُولُ سَمِعْتُ الْأَسْوَدَ بْنَ يَزِيدَ يَقُولُ قَالَتْ عَائِشَةُ

ؓ كَانَ رَسُولُ اللهِ ﷺ يَجْتَهِدُ فِي الْعَشْرِ الْأَوَاخِرِ مِنْ رَمَضَانَ مَا لَا يَجْتَهِدُ فِي غَيْرِهَا  

رَوَاهُ مُسْلِمٌ فِي الصَّحِيحِ عَنْ قُتَيْبَةَ وَأَبِي كَامِلٍ

See similar narrations below:

Collected by Tirmidhī, Ibn Mājah, Aḥmad
tirmidhi:796Qutaybah > ʿAbd al-Wāḥid b. Ziyād > al-Ḥasan b. ʿUbaydullāh > Ibrāhīm > al-Aswad > ʿĀʾishah

"The Messenger of Allah would struggle (to perform Salat more) during the last ten (nights) more than he would struggle in the rest of it."  

Abū ʿĪsá said that this Ḥadīth is Ḥasan-Ṣaḥīḥ-Gharīb.
الترمذي:٧٩٦حَدَّثَنَا قُتَيْبَةُ حَدَّثَنَا عَبْدُ الْوَاحِدِ بْنُ زِيَادٍ عَنِ الْحَسَنِ بْنِ عُبَيْدِ اللَّهِ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

كَانَ رَسُولُ اللَّهِ ﷺ يَجْتَهِدُ فِي الْعَشْرِ الأَوَاخِرِ مَا لاَ يَجْتَهِدُ فِي غَيْرِهَا  

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ غَرِيبٌ
ibnmajah:1767Muḥammad b. ʿAbd al-Malik b. Abū al-Shawārib And ʾAbū Isḥāq al-Harawī Ibrāhīm b. ʿAbdullāh b. Ḥātim > ʿAbd al-Wāḥid b. Ziyād > al-Ḥasan b. ʿUbaydullāh > Ibrāhīm al-Nakhaʿī > al-Aswad > ʿĀʾishah

“The Prophet ﷺ used to strive hard (in worship) in the last ten nights of Ramadan as he never did at any other time.”  

ابن ماجة:١٧٦٧حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الْمَلِكِ بْنِ أَبِي الشَّوَارِبِ وَأَبُو إِسْحَاقَ الْهَرَوِيُّ إِبْرَاهِيمُ بْنُ عَبْدِ اللَّهِ بْنِ حَاتِمٍ قَالاَ حَدَّثَنَا عَبْدُ الْوَاحِدِ بْنُ زِيَادٍ حَدَّثَنَا الْحَسَنُ بْنُ عُبَيْدِ اللَّهِ عَنْ إِبْرَاهِيمَ النَّخَعِيِّ عَنِ الأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

كَانَ النَّبِيُّ ﷺ يَجْتَهِدُ فِي الْعَشْرِ الأَوَاخِرِ مَا لاَ يَجْتَهِدُ فِي غَيْرِهِ  

ahmad:26188Abū Saʿīd > ʿAbd al-Wāḥid b. Ziyād > al-Ḥasan b. ʿUbaydullāh > Ibrāhīm > al-Aswad > ʿĀʾishah

"The Messenger of Allah would struggle (to perform Salat more) during the last ten (nights) more than he would struggle in the rest of it." (Using translation from Tirmidhī 796)  

أحمد:٢٦١٨٨حَدَّثَنَا أَبُو سَعِيدٍ قَالَ حَدَّثَنَا عَبْدُ الْوَاحِدِ بْنُ زِيَادٍ عَنِ الْحَسَنِ بْنِ عُبَيْدِ اللهِ عَنْ إِبْرَاهِيمَ عَنِ الْأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

كَانَ رَسُولُ اللهِ ﷺ يَجْتَهِدُ فِي الْعَشْرِ الْأَوَاخِرِ مَا لَا يَجْتَهِدُ فِي غَيْرِهِ