Are the commandments of Al-Khidr to Moses (peace be upon them both) mentioned in the question authentic, or are they fabricated or from the Israʼiliyyat, such as: "Do not reproach anyone for a sin," and "Adhere to that which nothing can harm you with," and "O son of Imran, do not open a door that you do not know how to close"?

This statement is not found in the well-known books of Ahl al-Sunnah, and it is mentioned by the Rafidi Shi'a in their books. Sheikh al-Islam Ibn Taymiyyah stated that they are the most untruthful of Allah's creation. Much of this statement was narrated in a lengthy hadith by al-Tabarani in "Al-Mu'jam al-Awsat," but this hadith is false and fabricated. Its chain of narration includes "Zakariya bin Yahya al-Waqqar," who is a liar and fabricator of hadith. Ibn Abi Hatim judged it to be false and a lie, and Ibn Kathir judged it to be unsound. More than one imam also refuted it.