Hadees Related to Intention (Niyat)

'A'ishah Radiyallahu 'anha narrates that Rasulallah Sallallahu 'alaihi wasallam said: An army will invade the Ka'bah; and when it reaches a barren plain, its men, from the first to the last, will be swallowed up by the earth. She says that I asked: O Rasulallah! How would the first and the last of them be swallowed up by the earth, when among them would be traders and people who were not a party to them. He said: The first and the last one of them would be swallowed up the earth; and when they will be resurrected they will be judged according to their intentions.(Sahih-Bukhari)