257. Amir al-mu'minin, peace be upon him, said to Kumayl ibn Ziyad an-Nakha'i: O Kumayl, direct your people to go out in the day to achieve noble traits and to go out in the night to meet the needs of those who might be sleeping, for I swear by Him Whose hearing extends to all voices if ever someone pleases another's heart, Allah will create a special thing out of this pleasing so that whenever any hardship befalls him it will come running like flowing water and drive away the hardship as wild camels are driven away.