When ʿAlī sent him (ʿAmmār) to Kūfah to call people for battle: We are fully aware that she (ʿĀʾishah) is the wife of the Prophet ﷺ in this world and the Hereafter, but Allah has tested you through her.
حِينَ بَعَثَهُ عَلِيٌّ ؓ إِلَى الْكُوفَةِ لِيَسْتَنْفِرَ النَّاسَ: إِنَّا لَنَعْلَمُ أَنَّهَا زَوْجَةُ النَّبِيِّ ﷺ فِي الدُّنْيَا وَالْآخِرَةِ وَلَكِنَّ اللهَ ابْتَلَاكُمْ بِهَا۔
When ʿAli sent ʿAmmar and Al-Hasan to (the people of) Kufa to urge them to fight, ʿAmmar addressed them saying, "I know that she (i.e. ʿAisha) is the wife of the Prophet ﷺ in this world and in the Hereafter (world to come), but Allah has put you to test, whether you will follow Him (i.e. Allah) or her."
لَمَّا بَعَثَ عَلِيٌّ عَمَّارًا وَالْحَسَنَ إِلَى الْكُوفَةِ لِيَسْتَنْفِرَهُمْ خَطَبَ عَمَّارٌ فَقَالَ إِنِّي لأَعْلَمُ أَنَّهَا زَوْجَتُهُ فِي الدُّنْيَا وَالآخِرَةِ وَلَكِنَّ اللَّهَ ابْتَلاَكُمْ لِتَتَّبِعُوهُ أَوْ إِيَّاهَا
When ʿAli sent ʿAmmar and Al-Hasan to (the people of) Kufa to urge them to fight, ʿAmmar addressed them saying, "I know that she (i.e. ʿAisha) is the wife of the Prophet ﷺ in this world and in the Hereafter (world to come), but Allah has put you to test, whether you will follow Him (i.e. Allah) or her." (Using translation from Bukhārī 3772)
لَمَّا بَعَثَ عَلِيٌّ عَمَّارًا وَالْحَسَنَ إِلَى الْكُوفَةِ لِيَسْتَنْفِرَاهُمْ فَخَطَبَ عَمَّارٌ فَقَالَ إِنِّي لَأَعْلَمُ أَنَّهَا زَوْجَتُهُ فِي الدُّنْيَا وَالْآخِرَةِ وَلَكِنَّ اللهَ ﷻ ابْتَلَاكُمْ لِتَتَّبِعُوهُ أَوْ إِيَّاهَا