حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا الأَسْوَدُ بْنُ قَيْسٍ، قَالَ سَمِعْتُ جُنْدُبَ بْنَ سُفْيَانَ ـ رضى الله عنه ـ قَالَ اشْتَكَى رَسُولُ اللَّهِ صلى الله عليه وسلم فَلَمْ يَقُمْ لَيْلَتَيْنِ أَوْ ثَلاَثًا، فَجَاءَتِ امْرَأَةٌ فَقَالَتْ يَا مُحَمَّدُ إِنِّي لأَرْجُو أَنْ يَكُونَ شَيْطَانُكَ قَدْ تَرَكَكَ، لَمْ أَرَهُ قَرِبَكَ مُنْذُ لَيْلَتَيْنِ أَوْ ثَلاَثًا‏.‏ فَأَنْزَلَ اللَّهُ عَزَّ وَجَلَّ ‏ Begin hadith 9‏

Narrated Jundub bin Sufyan: Once Allah's Messenger (PBUH) became sick and could not offer his night prayer (Tahajjud) for two or three nights. Then a lady (the wife of Abu Lahab) came and said, "O Muhammad! I think that your Satan has forsaken you, for I have not seen him with you for two or three nights!" On that Allah revealed: 'By the fore-noon, and by the night when it darkens, your Lord (O Muhammad) has neither forsaken you, nor hated you.' (93.1-3) Translation Not Available

Book Ref: Sahih Bukhari Book 65 Hadith 4950
Web Ref:  Sahih Bukhari Vol 6 Book 60 Hadith 475