There are two kinds of death, the death which is inevitable and common to all beings, and the death which is voluntary and particular to certain ones of them only. It is the second death which is prescribed for us in the words of the Messenger of Allah: "Die before you die." The resurrection is accomplished for him who dies this voluntary death. His affairs return to God and they are but one. He has returned to God and he sees Him through Him. As the Prophet said - on him be Grace and Peace! - according to a tradition reported by Tabarani, "You will not see your Lord before being dead" and that is because, in the contemplation of this dead-resurrected one, all creatures are annihilated, and for him only one thing exists, one Reality only. Whatever will be the lot of the believers in their posthumous states is prefigured in one degree or another in this life for the initiates. The "return" of things - considered in relation to [the diversity of] their forms - to Allah and the end of their becoming, expresses only a change of cognitive status and not at all a modification of the reality. For him who dies and achieves the resurrection, the multiple is one, by reason of its essential unity; and the One is multiple, by reason of the multiplicity in Him of relations and aspects.
Source: The Spiritual Writings of 'Abd al-Kader, 1995, Kitab al-Mawaqif, 221, pp. 51-52
Contributed by: Zaady