Ibn Khālawayh said: In the speech of the Arabs, khaḍir / khaḍira is used for just five things. (1) Al-Khaḍir is the name of a prophet, God's blessings and peace be upon him. He was called that because when he sat on a patch of ground, it sprang into greenness beneath him.
(2) Khaḍira is an epithet of the world here below. The Prophet of God, God's blessings and peace be upon him and his family, said: Al-dunyā ḥulwatun khaḍiratun ("This world is sweet and green").
(3) Whatever is said to be yours khaḍiran naḍiran ("green and flourishing") is free for you to take it. [The dual noun] al-khaḍiratān is heard in the expression for "Two things that are ever green: sakhbar and raiding"—[as if they were] two bushes, their freshness surpassing all other green things. In other words, one is impelled toward them both.
(4) Khaḍir is any green herbage that the earth puts forth, whether trees or panic grass or lush greenery [The IXth form verb] ikhḍarra is used for this, and for a tree whose greenery is plentiful.
The Prophet, God's prayers be upon him, said: "Refrain from those plants in your diet (khaḍirātikum) that have a strong smell," meaning garlic, onion, and leeks.
Palm trees too are called khaḍir. And khaḍir can refer to a dish of tender greens. Ukhtuḍira, [a passive VIIIth form verb meaning "to be cut off in a state of greenness"] is said of someone who dies in their youth, leaving nothing finished.
(5) And Khaḍir is the name of a tribal group.
From volume 5 of
The Book of "Not in the Speech of the Arabs"
by Ibn Khalawayh (Süleymaniye MS Shahid ‘Ali Pasha 2143, fol. 20v-21r)
