(Khayr al Khalq). The Holy Prophet Muhammad (May the Salutations of Allah be upon him and Peace) is the best of creation. Allah said, "If not for you, if not for you (Oh Muhammad), I would not have created the creation".
(Rasul). A Messenger (of Allah). The rasul is the one sent by Allah. Allah is the Principle and the rasul is a radiation from Allah. The Way back to Allah, the Principle is via His Messenger (rasul), the radiation.
(Rasulllah). The Messenger of Allah, Muhammad al Mustapha (May the Salutations of Allah be upon him and Peace). Through the radiant light of the Messenger, Allah sends to mankind the message of His Own Pure Light. "Allah took a handful of His Light and said, 'Be Muhammad!'. And it was". Each and every incoming thought, whether praiseworthy or blameworthy, is a 'messenger' from Allah. Through constantly keeping watch over his heart the knower is never unmindful of these messengers. Allah says in The Qur'an, "Now there has come unto you a Messenger from amongst your own selves" (The Qur'an 9:128). The lover, slave and knower of Allah is also the lover, slave and knower of the Messenger of Allah (Rasulullah), the Beloved of Allah, the Holy Prophet Muhammad (May the Salutations of Allah be upon him and Peace). Once you know Allah, then you will know who Muhammad really is! The ecstasy within the breast of this lover-slave-knower is the Messenger of Allah (Rasulullah). He is the messenger who will take him back to Allah.