(81) باب
Narrated Anas bin Malik:
Allah's Messenger (ﷺ) returned from the Ghazwa of Tabuk, and when he approached Medina, he said, "There are some people in Medina who were with you all the time, you did not travel any portion of the journey nor crossed any valley, but they were with you they (i.e. the people) said, "O Allah's Messenger (ﷺ)! Even though they were at Medina?" He said, "Yes, because they were stopped by a genuine excuse."
Reference: Sahih al-Bukhari 4423
In-book reference: Book 64, Hadith 445
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 59, Hadith 707