Dreaming of mending clothes symbolizes correcting your mistakes. It represents your self-awareness, honesty, and accuracy. If you have this kind of dream, it indicates your desire to make your life more organized and healthier. Additionally, it may suggest gaining a good reputation and liberation from illness. Sometimes, this dream can also signal the arrival of rain.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Darn" (page 109).
To mend a garment with interlac ing stitches in a dream means correcting oneself, piety, godliness, appropriate ness, good reputation, being free from illness, arming oneself, or it could mean rain. If one sees his wife's robe ripped and tends to mend it for her in a dream, it means that he will insult his wife, then apologize to her or regret his action. If one sees himself darning his own shirt in a dream, it means that he will have an argument with a relative or befriend a person of evil character. Darning one's clothes in a dream also represents the roar of arguments or disputes. In some circles, it is also interpreted to mean repentance from one's sins, regretting wrongdoing, although one will fail to apologize or adequately compensate the other person for offending him.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.