Al-Ṣaḥīfa al-Sajjādīyya (Arabic:الصَّحيفَة السَّجَّادية) is a book containing Imam al-Sajjad's 54 supplications and du'as. After the Qur'an and Nahj al-balagha, this book has an important position among the Shi'a school of thought and is known as "Zabur Al Muhammad" (the Psalms of the Family of Muhammad (s)) and "Injil Ahl al-Bayt (a)" (the Gospel of the Household of the Prophet (s)).
Many commentaries have been written on it; in al-Dhari'a, Aqa Buzurg Tihrani mentioned around 50 commentaries, among the most famous of which is Riyad al-salikin. Al-Sahifa al-Sajjadiyya has been translated into many languages including English, French, Turkish, Urdu, Spanish, Bosnian, Albanian, Tamil, etc. In addition to the status of this book among Shi'a, some Sunni scholars have also praised the eloquence of this book.
Although this book is in the form of supplications, it also contains many Islamic teachings mentioned alongside the supplications. In this book, topics surrounding different issues are explained in the form of supplications such as theology, ideology, anthropology, the Unseen World, angels, the nubuwwa, the position of the Prophet Muhammad (s) and the Ahl al-Bayt (a), Imamate, moral virtues and vices, honoring Eids, social and economic issues, historical points, different blessings of God, manners of supplication, recitation, dhikr, prayer, worship, etc. The most famous supplication of al-Sahifa al-Sajjadiyya is Makarim al-Akhlaq.