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nasai:3624 – ʿAmr b. ʿAlī > Azhar > Ibn ʿAwn > Ibrāhīm > al-Aswad > ʿĀʾishah > Ūn

"They say that the Messenger of Allah made a will concerning 'Ali, may Allah be pleased with him. But he called for a vessel in which to urinate, then he went limp without me realizing it. So to whom did he leave a will?"  

النسائي:٣٦٢٤ – أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ قَالَ حَدَّثَنَا أَزْهَرُ قَالَ أَنْبَأَنَا ابْنُ عَوْنٍ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

يَقُولُونَ إِنَّ رَسُولَ اللَّهِ ﷺ أَوْصَى إِلَى عَلِيٍّ ؓ لَقَدْ دَعَا بِالطَّسْتِ لِيَبُولَ فِيهَا فَانْخَنَثَتْ نَفْسُهُ ﷺ وَمَا أَشْعُرُ فَإِلَى مَنْ أَوْصَى  

See similar narrations below:

Collected by Nasāʾī, Nasāʾī's Kubrá
nasai:33 – ʿAmr b. ʿAlī > Azhar > Ibn ʿAwn > Ibrāhīm > al-Aswad > ʿĀʾishah

"They say that the Prophet ﷺ made a will for 'Ali,[1] but he called for a basin in which to urinate, then he went flaccid suddenly (and died), so how could he leave a will?!" The Shaikh said: Azhar (one of the narrators) is Ibn Sa'd As-Samman. [1] Meaning, appointing him as the Khalifah.  

النسائي:٣٣ – أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ قَالَ أَنْبَأَنَا أَزْهَرُ أَنْبَأَنَا ابْنُ عَوْنٍ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

يَقُولُونَ إِنَّ النَّبِيَّ ﷺ أَوْصَى إِلَى عَلِيٍّ لَقَدْ دَعَا بِالطَّسْتِ لِيَبُولَ فِيهَا فَانْخَنَثَتْ نَفْسُهُ وَمَا أَشْعُرُ فَإِلَى مَنْ أَوْصَى قَالَ الشَّيْخُ أَزْهَرُ هُوَ ابْنُ سَعْدٍ السَّمَّانُ  

nasai-kubra:6418 – ʿAmr b. ʿAlī > Azhar > Ibn ʿAwn > Ibrāhīm > al-Aswad > ʿĀʾishah

"They say that the Messenger of Allah made a will concerning 'Ali, may Allah be pleased with him. But he called for a vessel in which to urinate, then he went limp without me realizing it. So to whom did he leave a will?" (Using translation from Nasāʾī 3624)  

الكبرى للنسائي:٦٤١٨ – أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ قَالَ حَدَّثَنَا أَزْهَرُ قَالَ أَخْبَرَنَا ابْنُ عَوْنٍ عَنْ إِبْرَاهِيمَ عَنِ الْأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

يَقُولُونَ إِنَّ رَسُولَ اللهِ ﷺ أَوْصَى إِلَى عَلِيٍّ لَقَدْ دَعَا بِالطَّسْتِ لِيَبُولَ فِيهَا فَانْخَنَثَتْ نَفْسُهُ ﷺ وَمَا أَشْعُرُ فَإِلَى مَنْ أَوْصَى