Weakness is mentioned in the Quran in these verses:
[3:123] God has granted you victory at Badr, despite your weakness. Therefore, you shall observe God, to show your appreciation.
[7:150] When Moses returned to his people, angry and disappointed, he said, “What a terrible thing you have done in my absence! Could you not wait for the commandments of your Lord?” He threw down the tablets, and took hold of his brother’s head, pulling him towards himself. (Aaron) said, “Son of my mother, the people took advantage of my weakness, and almost killed me. Let not my enemies rejoice, and do not count me with the transgressing people.”
[17:111] And proclaim: “Praise be to God, who has never begotten a son, nor does He have a partner in His kingship, nor does He need any ally out of weakness,” and magnify Him constantly.
[30:54] God is the One who created you weak, then granted you after the weakness strength, then substituted after the strength weakness and gray hair. He creates whatever He wills. He is the Omniscient, the Omnipotent.
[36:68] Whomever we permit to live for a long time, we revert him to weakness. Do they not understand?
To learn more, read the Quran in English.
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