It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "The best of people in times of tribulation is a man who holds the reins of his horse (or he said: its rope), pursuing the enemies of Allah, he frightening them and they frightening him; or a man who withdraws into seclusion in his settlement (in the countryside) and fulfils the right of Allah that is due from him." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but the two Shaykhs did not record it in their books.