Abu Rashid al-Hubrani said: I saw Miqdad (may Allah be pleased with him) - the horseman (cavalry fighter) of the Messenger of Allah (peace and blessings be upon him) - sitting in Hims on one of the money-changers' chests, while his body was much bulkier than it, and he wanted to go out on a military expedition. I said: Allah Almighty has already excused you. He said: "Surat al-Bu'uth (that is, Surah al-Tawbah) has refused us (staying behind): 'Go forth, whether light or heavy' [al-Tawbah: 41]."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17690