Al-Sahifa al-Sajjadiyya
Al-Sahifa al-Sajjadiyya (Arabic: ٱلصَّحِيفَة ٱلسَّجَّادِيَّة, romanized: Al-Ṣaḥīfa al-Sajjādiyya, lit. 'the scripture of al-Sajjad') is a book of supplications attributed to Ali al-Sajjad (c. 659–713), the fourth imam in Shia Islam, and the great-grandson of the Islamic prophet, Muhammad. The oldest prayer manual in Islam, al-Sahifa has been praised as the epitome of Islamic spirituality and the answer to many of today's spiritual questions.