(4) باب تَرْكِ الْقِيَامِ لِلْمَرِيضِ
Narrated Jundab:
The Prophet (ﷺ) became sick and did not get up (for Tahajjud prayer) for a night or two.
Reference: Sahih al-Bukhari 1124
In-book reference: Book 19, Hadith 4
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 21, Hadith 224