Al-Khidr (al-Khiḍr, “the Green One”) is the mysterious immortal sage and saint of Islamic tradition: a righteous servant of God endowed with hidden divine knowledge, the enigmatic guide who taught the Prophet Moses the limits of human understanding, an immortal wanderer associated with the green of life, the waters, and the Water of Life, who appears to guide and aid the faithful across the ages. He is the Green One, the immortal sage of hidden knowledge.
The Green One
Al-Khidr (al-Khiḍr, “the Green” or “the Green One,” so called because, in the legends, where he sat or trod the ground grew green and verdant, or for his association with the green of life and the waters) is one of the most beloved and mysterious figures of Islamic tradition — a righteous servant of God, a saint and sage, endowed by God with a special, hidden knowledge (’ilm al-laduní, knowledge direct from the divine presence) that surpasses the ordinary knowledge of even the prophets in certain respects. He is most often (though not always) reckoned not a prophet but a walí (a friend or saint of God), and he is widely held to be immortal, or to have an immensely long life, wandering the earth and the waters across the ages.
The Guide of Moses
Al-Khidr’s most famous appearance is in the Qur’an (Surah al-Kahf), in the story of his journey with the Prophet Moses (Musa). Though not named there, the “righteous servant” whom Moses seeks out and follows is identified in the tradition as al-Khidr. Moses, wishing to learn from this servant of God endowed with hidden knowledge, asks to accompany him — and al-Khidr warns that Moses will not be able to bear with him patiently, for al-Khidr will do things whose meaning Moses cannot understand. And so it proves: al-Khidr scuttles a boat, slays a young man, and repairs a wall in a town that refused them hospitality — each act seemingly wrong or strange, and each time Moses, unable to restrain himself, questions and protests. At last al-Khidr explains the hidden wisdom behind each act (the boat was scuttled to save it from a tyrant-king who seized sound vessels; the youth would have grown to grieve his pious parents and was taken so God might give them a better child; the wall hid a treasure for two orphans, preserved by the repair) — and then they part. The story is a profound parable of the limits of human understanding and the hidden wisdom of God’s ways, which often seem strange or wrong to mortal eyes but serve a deeper good.
The Immortal Wanderer and the Water of Life
Al-Khidr is, in the wider tradition, an immortal or undying figure, often associated with the Water of Life (the spring of immortality, which he is said to have found and drunk, gaining eternal life), with the meeting of the two seas, and with the green and fertile. He is held to wander the world, appearing in many places and ages to guide, aid, test, and instruct the faithful, the lost, and the seekers — a hidden guide and helper, a teacher of mystics and saints, an ever-living friend of God. He is deeply beloved in Sufism and popular devotion as the patron of travellers, the guide of the perplexed, and the immortal sage of hidden wisdom. As the Green One, the immortal servant of God endowed with hidden knowledge, the guide of Moses and the ever-living wanderer who aids the faithful, al-Khidr is one of the most cherished and enigmatic figures of Islamic tradition. In al-Khidr, Islamic tradition gave form to the immortal sage — the Green One, the righteous servant of God of hidden divine knowledge who taught Moses the limits of understanding and wanders the ages to guide the faithful, the deathless sage of Islam.