Nawawi's Forty è una raccolta di quaranta hadith dell'Imam al-Nawawi.

Hadees (/ˈhædɪθ/ or /hɑːˈdiːθ/; Arabic: حديث‎ hadit Arabic pronunciation: [ħadiːθ], pl. ahadith, أحاديث, ʾaḥādīṯ, Arabic pronunciation: [ʔaħadiːθ], literally means "talk" or "discourse") or Athar (Arabic: أثر‎, ʾAṯar, literally means "tradition") in Islam refers to what the majority of Muslims believe to be a record of the words, actions, and the silent approval of the Islamic prophet Muhammad.

In other words, the hadith are reports about what Muhammad said and did. As noted by Emad Hamdeh, each report is a piece of data about Muhammad; when collected, these data points paint a larger picture which is referred to as the Sunnah.

Hadith have been called "the backbone" of Islamic civilization, and within that religion the authority of hadith as a source for religious law and moral guidance ranks second only to that of the Quran (which Muslims hold to be the word of God revealed to Muhammad). Scriptural authority for hadith comes from the Qur'an, which enjoins Muslims to emulate Muhammad and obey his judgments (in verses such as 24:54, 33:21).

While the number of verses pertaining to law in the Quraan is relatively few, hadith give direction on everything from details of religious obligations (such as Ghusl or Wudu, ablutions for salat prayer), to the correct forms of salutations and the importance of benevolence to slaves. Thus the "great bulk" of the rules of Sharia (Islamic law) are derived from hadith, rather than the Quran.

Ḥadīth is the Arabic word for things like speech, report, account, narrative.: 471  Unlike the Quran, not all Muslims believe that hadith accounts (or at least not all hadith accounts) are divine revelation. Hadith were not written down by Muhammad's followers immediately after his death but many generations later when they were collected, collated and compiled into a great corpus of Islamic literature. Different collections of hadīth would come to differentiate the different branches of the Islamic faith. There are many modern Muslims (some of whom call themselves Quranists but many are also known as Submitters) who believe that most Hadiths are actually fabrications (pseudepigrapha) created in the 8th and 9th century CE, and which are falsely attributed to Muhammad.

Because some hadith include questionable and even contradictory statements, the authentication of hadith became a major field of study in Islam. In its classic form a hadith has two parts—the chain of narrators who have transmitted the report (the isnad), and the main text of the report (the matn).

Among scholars of Sunni Islam the term hadith may include not only the words, advice, practices, etc. of Muhammad, but also those of his companions. In Shia Islam, hadith are the embodiment of the sunnah, the words and actions of Muhammad and his family the Ahl al-Bayt (The Twelve Imams and Muhammad's daughter, Fatimah).

Imam an-Nawawi is one of the great scholars. Amongst his works is his collection of 42 hadith's of the Prophet Sallallaahu 'alayhi wa sallam which a comprehensive explanation of Islam. This work is commonly referred as "An-Nawawi's Forty Hadith".

Nawawi's Forty (Arabic: الأربعون النووية) is a compilation of forty hadiths by Imam al-Nawawi, most of which are from Sahih Muslim and Sahih al-Bukhari. This collection of hadith has been particularly valued over the centuries because it is a distillation, by one of the most eminent and revered authorities in Islamic jurisprudence, of the foundations of Islamic sacred law or Sharīʿah. In putting together this collection, it was the author's explicit aim that “each hadith is a great fundament (qāʿida ʿaẓīma) of the religion, described by the religious scholars as being ‘the axis of Islam’ or ‘the half of Islam’ or ‘the third of it’ or the like, and to make it a rule that these forty hadith be classified as sound (ṣaḥīḥ).

يحتوي التطبيق على شرح "جامع العلوم والحكم" لابن رجب وشرح ابن عثيمين وشرح عبد الكريم الخضير + الشروحات الأخرى والإعراب مع إمكانية الإستماع إلى الأحاديث.