Tafsir Furat Kufi is an exegesis of the Quran by Furat Ibn Furat Ibn Ibrahim al-Kufi (9th and 10th century A.D.) and is one of the oldest Shia Quranic commentaries, basing itself upon hadith.
[1] The traditions used by this book are mainly narrated either from Muhammad al-Baqir, Jafar al-Sadiq or Ali's disciples such as `Abd Allah ibn `Abbas, Mujahid and Asbagh Ibn Nubata; although there are some that relate to one of the companions of Muhammad.
[2][3] In Shia Islam it is assumed that the Imams inherited their teachings from Muhammad.
The Imams therefore, are considered the first authorities of Qur'anic interpretation.
[4]