Hadith of warning Hadith of warning The Hadith of Warning or Yawm al-Inzar (), also known as Invitation of the close families of Muhammad (دعوة ذو العشیرة - Da‘wat dhul-‘Ashīrah) is an event that took place in the fourth year of Islam. Shias use this hadith to prove Ali ibn Abi Talib's claim as the rightful successor to Muhammad. Muhammad invited people to Islam in secret for three years before he started inviting them publicly. In the fourth year of Islam, when Muhammad was commanded to invite his closer relatives to come to Islam he gathered the Banu Hashim clan in a ceremony.
Introduction to the Science of Hadith category, which comprises 21 types, relates to the names of the narrators. This includes the definition of a "ṣaḥābī" (companion), a "tābi`ī" (follower), the time periods of narrators, names and paidonymics among others. Later scholars included additional types of hadith in their own works, with some almost reaching 100. The "Introduction" became the basis for subsequent books in hadith terminology. A number of subsequent scholars followed Ibn al-Ṣalāḥ in the ordering of his book, including al-Nawawī, Ibn Kathīr, al-ʻIraqi, al-Bulqīnī, Ibn al-Jamā`ah, al-Tabrīzī, al-Ṭībī and al-Zirkashī. In many instances this influence was direct, with numerous scholars authoring books indicating its