Imam Mahdi (AS) always used to say in guidance (hidayat) "Hand over your zat (nature, self) to Allah. Do not engage yourself in talk with others. Do not desire anything. Do not have an iota of want (ihtiyaj) from the persons created by Allah (makhluq) and from none but Allah.
(Insaaf Nama - Matan Sharif, No. 149)