Jabir bin Abdullah Al-Ansari (May Allah be pleased with them) reported:
We accompanied the Prophet ﷺ in an expedition when he said, "There are some men in Al-Madinah who are with you wherever you march and whichever valley you cross. They have not joined you in person because of their illness." In another version he said: "They share the reward with you."

[Muslim].

It is narrated by Bukhari from Anas bin Malik (May Allah be pleased with him): We were coming back from the battle of Tabuk with the Prophet ﷺ when he remarked, "There are people whom we left behind in Al- Madinah who accompanied us in spirit in every pass and valley we crossed. They remained behind for a valid excuse."

وعن أبي عبد الله جابر بن عبد الله الأنصارى رضي الله عنهما قال: كنا مع النبي ﷺ في غزاةٍ فقال: "إن بالمدينة لرجالاً ماسرتم مسيراً، ولا قطعتم وادياً إلا كانوا معكم حبسهم المرض" وفى رواية: "إلا شاركوكم في الأجر" ((رواه مسلم)). ((ورواه البخاري)) عن أنس رضي الله عنه قال: رجعنا من غزوة تبوك مع النبي ﷺ فقال: " إن أقواماً خلفنا بالمدينة ما سلكنا شعباً ولا وادياً إلا وهم معنا، حبسهم العذر".