4-89 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Sa’ed ibn Abdullah quoted on the authority of Al-Qasim ibn Muhammad al-Isfahani, on the authority of Suleiman ibn Davood al-Minqari, on the authority of Fuzayl ibn Ayaz,

“I asked Aba Abdullah as-Sadiq (MGB), ‘Is Jihad recommended or obligatory?’ The Imam (MGB) replied, ‘There are four types of Jihad: Two types are obligatory; one type is recommended, but it is performed as obligatory; one last type is recommended. The greatest jihad is fighting yourself, trying not to commit any sins. This is obligatory. Fighting with the infidels who attack you is also obligatory. However, the third type of Jihad is fighting against the enemies and it is obligatory for all people. If they abandon it, punishment will descend upon them. This type of Jihad is recommended for the Divine Leader (MGB). At the most, the enemies attack the people, and they will fight back. However, the type of Jihad that is recommended is reviving the traditions. If you decide to establish a good tradition and make an effort in developing it, your deeds are of the best deeds, since it intends to revive the traditions.’”