Language:
كتاب المغازى
64  
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
(81)
Chapter
(81)
باب
Sahih al-Bukhari 4423

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."

حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا حُمَيْدٌ الطَّوِيلُ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَجَعَ مِنْ غَزْوَةِ تَبُوكَ فَدَنَا مِنَ الْمَدِينَةِ فَقَالَ ‏"‏ إِنَّ بِالْمَدِينَةِ أَقْوَامًا مَا سِرْتُمْ مَسِيرًا وَلاَ قَطَعْتُمْ وَادِيًا إِلاَّ كَانُوا مَعَكُمْ ‏"‏‏.‏ قَالُوا يَا رَسُولَ اللَّهِ وَهُمْ بِالْمَدِينَةِ قَالَ ‏"‏ وَهُمْ بِالْمَدِينَةِ، حَبَسَهُمُ الْعُذْرُ ‏"‏‏.‏
Reference : Sahih al-Bukhari 4423
In-book reference : Book 64, Hadith 445
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 707
  (deprecated numbering scheme)