34. The most useful knowledge is that which is acted upon. Leave a Comment / Knowledge / By technorthstar3@gmail.com 34. The most useful knowledge is that which is acted upon. 34 ألا لايَسْتَقْبِحَنَّ مَنْ سُئِلَ عَمّا لايَعْلَمُ أنْ يَقُولَ لا أعْلَمُ. Share on Whatsapp Bookmark (0) Please login to bookmark Close Username or Email Address Password Remember Me No account yet? Register
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