The Forty Hadith of Imam al-Nawawi

There were some scholars who collected forty hadiths on the fundamentals, while others did so on derived matters, others on jihad, others on indifference to worldly things, others on conduct, others on speeches, etc., and all of them are sound directions; may Allah be pleased with those who followed them. But I have considered collecting forty more important than all of those, and they would be forty hadiths inclusive of all that, but each hadith would be a great precept from those of the religi