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.
tirmidhi:443Hannād > Abū al-Aḥwaṣ > al-Aʿmash > Ibrāhīm > al-Aswad b. Yazīd > ʿĀʾishah

"The Prophet (S) would pray nine Rak'ah in the night."  

الترمذي:٤٤٣حَدَّثَنَا هَنَّادٌ حَدَّثَنَا أَبُو الأَحْوَصِ عَنِ الأَعْمَشِ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ بْنِ يَزِيدَ عَنْ عَائِشَةَ قَالَتْ

كَانَ النَّبِيُّ ﷺ يُصَلِّي مِنَ اللَّيْلِ تِسْعَ رَكَعَاتٍ قَالَ وَفِي الْبَابِ عَنْ أَبِي هُرَيْرَةَ وَزَيْدِ بْنِ خَالِدٍ وَالْفَضْلِ بْنِ عَبَّاسٍ  

قَالَ أَبُو عِيسَى حَدِيثُ عَائِشَةَ حَدِيثٌ حَسَنٌ غَرِيبٌ مِنْ هَذَا الْوَجْهِ