10. The basis of Islam is truthfulness [in speech]. Leave a Comment / Islam / By technorthstar3@gmail.com 10. The basis of Islam is truthfulness [in speech]. 10 مِلاكُ الإسْلامِ صِدْقُ اللِّسانِ. Share on Whatsapp Bookmark (0) Please login to bookmark Username or Email Address Password Remember Me No account yet? Register