 abdul malik said to his brother abdul aziz when he sent him to egypt know your chamberlain your companion and your secretary. for the one who is absent will be informed about you by your secretary the one who observes you will know you by your chamberlain and the one who leaves you will know you by your companion.
قال عبد الملك لأخيه عبد العزيز حين وجهه إلى مصر اعرف حاجبك، وجليسك، وكاتبك. فإن الغائب يخبره عنك كاتبك، والمتوسم يعرفك بحاجبك، والخارج من عندك يعرفك بجليسك.