Sahih Bukhari
Sales and Trade
Volume: 003 / Book Number: 034 / Hadith Number: 329
Narrated 'Aisha:
Allah's Apostle said, "An army will invade the Ka'ba and when the invaders reach Al-Baida', all the ground will sink and swallow the whole army." I said, "O Allah's Apostle! How will they sink into the ground while amongst them will be their markets (the people who worked in business and not invaders) and the people not belonging to them?" The Prophet replied, "all of those people will sink but they will be resurrected and judged according to their intentions."