And he said: You will see that the person who showed the most aversion to accepting Islam, after accepting Islam, you will find that very person to be the best among you.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9412
Hadith Gradingحکم دارالسلام:حدیث صحیح ، وھذا إسناد قوي ،خ : 3496 ، م : 2526