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.
muslim:2436ʿAbd b. Ḥumayd > ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > ʿUrwah > ʿĀʾishah

'A'isha reported that Allah's Apostle ﷺ did not marry any other woman till her (Khadija's) death.  

مسلم:٢٤٣٦حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ أَخْبَرَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ عُرْوَةَ عَنْ عَائِشَةَ قَالَتْ

لَمْ يَتَزَوَّجِ النَّبِيُّ ﷺ عَلَى خَدِيجَةَ حَتَّى مَاتَتْ  


See similar narrations below:

Collected by Ṭabarānī
tabarani:19387Muḥammad b. ʿAbdullāh al-Ḥaḍramī > Muḥammad b. ʿAbdullāh b. Numayr > Yūnus b. Bukayr > Ibn Isḥāq

[Machine] The Messenger of Allah ﷺ did not marry Khadijah until she passed away.  

الطبراني:١٩٣٨٧حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَضْرَمِيُّ ثنا مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ نُمَيْرٍ ثنا يُونُسُ بْنُ بُكَيْرٍ عَنِ ابْنِ إِسْحَاقَ قَالَ

«لَمْ يَتَزَوَّجْ رَسُولُ اللهِ ﷺ عَلَى خَدِيجَةَ حَتَّى مَاتَتْ»  

tabarani:19388Isḥāq b. Ibrāhīm > ʿAbd al-Razzāq > Maʿmar > al-Zuhrī

[Machine] "I heard Al-Zuhri saying, 'The Prophet ﷺ did not marry Khadijah until she died.'"  

الطبراني:١٩٣٨٨حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ عَنْ عَبْدِ الرَّزَّاقِ عَنْ مَعْمَرٍ قَالَ

سَمِعْتُ الزُّهْرِيَّ يَقُولُ «لَمْ يَتَزَوَّجِ النَّبِيُّ ﷺ عَلَى خَدِيجَةَ حَتَّى مَاتَتْ»