as well as prophetic secrets that Allah had not disclosed to Moses, the noble Speaker, Prophet of the Children of Israel.
Al-Rummānī (1) used this very line of argument to demonstrate the prophethood of al-Khiḍr (peace be upon him).
Third:
Al-Khiḍr went so far as to kill that boy, and he did so only on the basis of revelation from the All-Knowing King. This is an independent proof of his prophethood and a clear sign of his infallibility, for a mere saint (walī) is not allowed to take a life simply because of an inner prompting; his thoughts are not protected from error, and by unanimous agreement he can be mistaken. Yet al-Khiḍr killed the youngster—who had not yet reached puberty—knowing that when he grew up he would disbelieve and lead his parents into disbelief out of their intense love for him. Thus, killing him achieved a great benefit that outweighed preserving his life, safeguarding his parents from falling into disbelief and its punishment. This shows that al-Khiḍr was a prophet, divinely aided with infallibility.
I have found Shaykh Abū al-Faraj Ibn al-Jawzī adopting this very argument to affirm al-Khiḍr’s prophethood, declaring it sound, and attributing it to al-Rummānī as well.
Fourth:
When al-Khiḍr explained the hidden meanings of his deeds to Moses, unveiling their reality, he concluded by saying, “as a mercy from your Lord. I did not do it of my own accord” (al-Kahf 18:82). In other words, I did none of this on my own initiative; I was commanded to do it and it was revealed to me. These considerations collectively attest to his prophethood. This does not negate his sainthood—indeed, some have even spoken of his messengership.
As for those who claim he was an angel, that is an extremely strange opinion. Once his prophethood is established, as we have shown, there remains no ground for those who say he was merely a saint who could perceive realities hidden from the exponents of the outward law; such people have no evidence to rely upon and no sound basis (2).
Regarding the dispute over whether he is still alive today, the majority maintain that he remains alive.
It is said that he buried Adam after the Flood, and so received his father Adam’s supplication for long life.
Others say he drank from the Spring of Life and thus lived on.
They have cited reports to support his continued existence up to the present; we shall mention them, Allah willing, for in Him alone we trust (3).
This was his counsel to Moses when he said, “This is the parting between me and you” (al-Kahf 18:78).