Hadith: In Madīnah, there are people who are with you whenever you cover a distance or cross a valley. They have been detained by illness

عن أبي عبد الله جابر بن عبد الله الأنصاري رضي الله عنهما ، قال: كنا مع النبي صلى الله عليه وسلم في غَزَاةٍ، فقال: «إن بالمدينة لَرِجَالًا ما سِرْتُم مَسِيرًا، ولا قَطَعْتُم وَادِيًا، إلا كانوا مَعَكُم حَبَسَهم المرضُ». وفي رواية: «إلا شَرَكُوكُم في الأَجْرِ». وعن أنس - رضي الله عنه - قال: رجعنا من غزوة تبوك مع النبي صلى الله عليه وسلم فقال: «إن أقواما خلفنا بالمدينة ما سلكنا شِعْبَا، ولا واديا، إلا وهم معنا؛ حبسهم العذر».
[صحيح] - [حديث جابر -رضي الله عنه-: رواه مسلم. حديث أنس -رضي الله عنه-: رواه البخاري]

Abu ‘Abdullāh Jābir ibn ‘Abdullāh al-Ansāri (may Allah be pleased with him) reported: We were with the Prophet (may Allah's peace and blessings be upon him) on an expedition, and he said: "In Madīnah, there are people who are with you whenever you cover a distance or cross a valley. They have been detained by illness.'' Another narration reads: ''They have shared the reward with you." Anas (may Allah be pleased with him) said: ''When we returned from the battle of Tabūk with the Prophet (may Allah's peace and blessings be upon him) he said: 'There are people whom we left behind in Madīnah who accompany us in spirit in every pass and valley we cross. They have been detained by a valid excuse.'''
[Authentic hadith] - [Narrated by Bukhari - Narrated by Muslim]

Explanation

The Prophet (may Allah's peace and blessings be upon him) talks about some men who could not participate in Jihad because they were sick or had other valid excuses. He stresses that whenever the Muslim fighters travel a distance or cross a valley or a defile, those who are detained get reward for such actions as well.