Maturity is mentioned in the Quran in these verses:
[6:152] You shall not touch the orphans’ money except in the most righteous manner, until they reach maturity. You shall give full weight and full measure when you trade, equitably. We do not burden any soul beyond its means. You shall be absolutely just when you bear witness, even against your relatives. You shall fulfill your covenant with God. These are His commandments to you, that you may take heed.
[12:22] When he reached maturity, we endowed him with wisdom and knowledge. We thus reward the righteous.
[17:34] You shall not touch the orphans’ money except for their own good, until they reach maturity. You shall fulfill your covenants, for a covenant is a great responsibility.
[22:5] O people, if you have any doubt about resurrection, (remember that) we created you from dust, and subsequently from a tiny drop, which turns into a hanging (embryo), then it becomes a fetus that is given life or deemed lifeless. We thus clarify things for you. We settle in the wombs whatever we will for a predetermined period. We then bring you out as infants, then you reach maturity. While some of you die young, others live to the worst age, only to find out that no more knowledge can be attained beyond a certain limit. Also, you look at a land that is dead, then as soon as we shower it with water, it vibrates with life and grows all kinds of beautiful plants.
[28:14] When he reached maturity and strength, we endowed him with wisdom and knowledge. We thus reward the righteous.
[40:67] He is the One who created you from dust, and subsequently from a tiny drop, then from a hanging embryo, then He brings you out as a child, then He lets you reach maturity, then you become old – some of you die earlier. You attain a predetermined age, that you may understand.
[46:15] We enjoined the human being to honor his parents. His mother bore him arduously, gave birth to him arduously, and took intimate care of him for thirty months. When he reaches maturity, and reaches the age of forty, he should say, “My Lord, direct me to appreciate the blessings You have bestowed upon me and upon my parents, and to do the righteous works that please You. Let my children be righteous as well. I have repented to You; I am a submitter.”
To learn more, read the Quran in English.
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