Tafsir of Ash-Shu`ara' 26:153

"They said, 'You are only one of those bewitched [al-musahhar].'"

Al-Musahhar: One who has been bewitched so frequently that it has overcome his intellect. It is also said: It is derived from al-siḥr (the lung), implying that he is merely a human being [who eats and drinks].

"He said, 'This is a she-camel; she has a share of water, and you have a share of water on a known day. And do not touch her with harm, lest the punishment of a tremendous day seize you.'"