Al mouwatta is an Islamic work constituting the basis of the jurisprudence of the Malikite school. Considered to be one of the oldest existing sources of Hadiths, the different hadiths are classified by subject: Prayer, ablution, Ramadan, Hajj, travel, Quran, zakat, marriage, sales, wills , alms, etc ....
This book is the most authentic in its time after the Koran. As Ach-Chafi'i said: "The most authentic work after the Book of God is the Mouwatta of Malik"