Sahifa Sajjadiyyah is a collection of prayers of Imam Zayn al-Abidin (a.s.) which he (a.s.) dictated to Imam Muhammad Baqir (a.s.) and Zayd bin Ali. This book is considered to be the most important written legacy of the Shia school after the Qur'an and Nahjul-Balagha and is known by names such as "Akht al-Qur'an" and "Injil Ahl al-Bayt (AS)". It is also known as Saheeh Kamila.

The mobile application of this great collection of supplications to adapt to the demands of the modern age is offered in collaboration with Jamiat Al-Kawsar and Center for Islamic Thought.