Once the Prophet ﷺ fell ill and did not offer the night prayer (Tahajjud prayer) for a night or two. A woman (the wife of Abu Lahab) came to him and said, "O Muhammad ! I do not see but that your Satan has left you." Then Allah revealed (Surat-Ad-Duha): 'By the fore-noon, and by the night when it darkens (or is still); Your Lord has not forsaken you, nor hated you.' (93) (Using translation from Bukhārī 4983)   

سَمِعْتُ جُنْدُبًا يَقُولُ اشْتَكَى النَّبِيُّ ﷺ فَلَمْ يَقُمْ لَيْلَةً أَوْ لَيْلَتَيْنِ فَأَتَتِ امْرَأَةٌ فَقَالَتْ يَا مُحَمَّدُ مَا أَرَى شَيْطَانَكَ إِلَّا قَدْ تَرَكَكَ فَأَنْزَلَ اللهُ ﷻ {وَالضُّحَى وَاللَّيْلِ إِذَا سَجَى مَا وَدَّعَكَ رَبُّكَ وَمَا قَلَى} [الضحى 2]  

I heard Jundub b. Sufyan say: The Messenger of Allah ﷺ fell ill and did not wake up for two or three nights (for prayers) A woman came to him and said: Muhammad, I hope that your satan has left you. I haven't seen him approach you for two or three nights. The narrator says: At this, Allah, the Glorious and Exalted, revealed:" By the Glorious......" (Using translation from Muslim 1797b)   

سَمِعْتُ جُنْدُبًا يَقُولُ اشْتَكَى رَسُولُ اللهِ ﷺ فَلَمْ يَقُمْ لَيْلَتَيْنِ أَوْ ثَلَاثًا فَجَاءَتْهُ امْرَأَةٌ فَقَالَتْ يَا مُحَمَّدُ إِنِّي أَرْجُو أَنْ يَكُونَ شَيْطَانُكَ قَدْ تَرَكَكَ لَمْ أَرَهُ قَرَبَكَ مُنْذُ لَيْلَتَيْنِ أَوْ ثَلَاثٍ فَأَنْزَلَ اللهُ تَعَالَى {وَالضُّحَى وَاللَّيْلِ إِذَا سَجَى مَا وَدَّعَكَ رَبُّكَ وَمَا قَلَى} [الضحى 2]  

[Machine] Aisha would not neglect night prayer, for the Messenger of Allah ﷺ would never neglect it. And when he became ill or said she was lazy, he would pray sitting down. Shu'bah narrated from Yazid ibn Khumayr, and Muawiyah ibn Salih narrated from Abdullah ibn Abi Qais, and he is the most reliable.  

عَائِشَةُ ؓ لَا تَدَعْ قِيَامَ اللَّيْلِ فَإِنَّ رَسُولَ اللهِ ﷺ كَانَ لَا يَدَعُهُ وَكَانَ إِذَا مَرِضَ أَوْ قَالَتْ كَسِلَ صَلَّى قَاعِدًا كَذَا قَالَ شُعْبَةُ عَنْ يَزِيدَ بْنِ خُمَيْرٍ وَقَالَ مُعَاوِيَةُ بْنُ صَالِحٍ عَبْدُ اللهِ بْنُ أَبِي قَيْسٍ وَهُوَ أَصَحُّ