Sahih Muslim Book 41, Hadith Number 6888.

Chapter : The sinking of an army in the earth which would attack the House.

Abdullah b. Safwan reported that Hafsa told him that she had heard Allah’s Apostle (may peace be upon him) as saying: An army would attack this House in order to fight against the inhabitants of this House and when it would be at the plain ground the ranks in the centre of the army would be sunk and the vanguard would call the rear flanks of the army and they would also be sunk and no flank would be left except some people who would go to inform them (their kith and kin). A person (who had been listening to this hadith from Abdullah b. Safwan) said: I bear testimony in regard to you that you are not imputing a lie to Hafsa. And I bear testimony to the fact that Hafsa is not telling a lie about Allah’s Apostle (may peace be upon him).