Jundub ibn Sufyan reported:

Jundub ibn Sufyan reported: Once the Messenger of Allah, peace be upon him, became sick and he could not offer his night prayer for two or three nights. Then a woman came to him and she said, “O Muhammad! I think your devil has forsaken you, for I have not seen him with you for two or three nights!” Then Allah the Exalted revealed, “By the forenoon; by the night when it darkens; your Lord has not forsaken nor does He hate you…” (93:1-3)

[Sahih Bukhari, Book 60, Number 475]

جُنْدُبَ بْنَ سُفْيَانَ رَضِيَ اللَّهُ عَنْهُ قَالَ اشْتَكَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَلَمْ يَقُمْ لَيْلَتَيْنِ أَوْ ثَلَاثًا فَجَاءَتْ امْرَأَةٌ فَقَالَتْ يَا مُحَمَّدُ إِنِّي لَأَرْجُو أَنْ يَكُونَ شَيْطَانُكَ قَدْ تَرَكَكَ لَمْ أَرَهُ قَرِبَكَ مُنْذُ لَيْلَتَيْنِ أَوْ ثَلَاثَةٍ فَأَنْزَلَ اللَّهُ عَزَّ وَجَلَّ وَالضُّحَى وَاللَّيْلِ إِذَا سَجَى مَا وَدَّعَكَ رَبُّكَ وَمَا قَلَى

4667 صحيح البخاري كِتَاب تَفْسِيرِ الْقُرْآنِ سُورَةُ وَالضُّحَى بَاب مَا وَدَّعَكَ رَبُّكَ وَمَا قَلَى