Narrated under the authority of Abdullah Ibn A`mr Bin al A`as he said: the Messenger of Allah blessing and peace be upon him said:" how would you be during a time about to come when people shall be seriously screened and filtered leaving from among people only scrap whose pledges and trusts had been mingled and corrupted to the extend that they became like this and like this and he tangled his fingers. The said: how should we behave O Messenger of Allah when this time comes?! he said: take (apply) what you know, leave (refrain from) what you reject, focus on your private and personal matters and leave off matters of your people". (reported by Bukhari, Muslim and Abi Daoud