Khidr literally means 'The Green One', representing freshness of spirit and eternal liveliness, green symbolizing the freshness of knowledge "drawn out of the living sources of life." Whatever the source for this green may he, it has come to symbolize the benign presence of the divine wisdom as imparted by the Divine Himself to Khidr and to Prophet Muhammad.
Qur'ānic commentators say that al-Khidr ('The Green Man' of pre-Islamic lore) is one of the prophets; others refer to him simply as an angel who functions as a guide to those who seek God. And there are yet others who argue for his being a perfect wali meaning the one whom God has taken as a friend.
Khidr is associated with the Water of Life. Since he drank the water of immortality he is described as the one who has found the source of life, 'the Eternal Youth.' He is the mysterious guide and immortal saint in popular Islamic lore and the hidden initiator of those who walk the mystical path.
In the Islamic tradition Khidr is alive and well and continues to guide the perplexed and those who invoke his name.