Sayyiduna Anas (may Allah be pleased with him) narrates: When the Prophet Muhammad (peace and blessings be upon him) returned from the expedition of Tabuk and approached Madinah, he said: "There are some people in Madinah who, whenever you traveled or crossed any valley, they were with you." The people asked: "O Messenger of Allah (peace and blessings be upon him)! Are those people in Madinah?" The Prophet (peace and blessings be upon him) replied: "Yes, they are the ones who could not participate (in jihad) due to a valid excuse."
Hadith Referenceصحیح ابن حبان / كتاب السير / 4731
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «صحيح أبي داود» (2265)، «تخريج فقه السيرة» (410): خ.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الشيخين