Keys are mentioned in the Quran in these verses:

[6:59] With Him are the keys to all secrets; none knows them except He. He knows everything on land and in the sea. Not a leaf falls without His knowledge. Nor is there a grain in the depths of the soil. Nor is there anything wet or dry, that is not recorded in a profound record.

[24:61] The blind is not to be blamed, the crippled is not to be blamed, nor is the handicapped to be blamed, just as you are not to be blamed for eating at your homes, or the homes of your fathers, or the homes of your mothers, or the homes of your brothers, or the homes of your sisters, or the homes of your fathers’ brothers, or the homes of your fathers’ sisters, or the homes of your mothers’ brothers, or the homes of your mothers’ sisters, or the homes that belong to you and you possess their keys, or the homes of your friends. You commit nothing wrong by eating together or as individuals. When you enter any home, you shall greet each other a greeting from God that is blessed and good. God thus explains the revelations for you, that you may understand.

[28:76] Qaaroon (the slave driver) was one of Moses’ people who betrayed them and oppressed them. We gave him so many treasures that the keys thereof were almost too heavy for the strongest band. His people said to him, “Do not be so arrogant; God does not love those who are arrogant.

To learn more, read the Quran in English.

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