Scholars had previously claimed it was the responsibility of a centralized government to organize jihad. But this changed as the authority of the Abbasid caliph weakened. Al-Mawardi allowed local governors to wage jihad on the caliph's behalf. This decentralization of jihad became especially pressing after the Crusades. Ali ibn Tahir al-Sulami argued that all Muslims were responsible for waging wars of self-defense. Al-Sulami encouraged Muslim rulers from distant lands to assist Muslims who were under attack.
Scholars had previously claimed it was the responsibility of a centralized government to organize jihad. But this changed as the authority of the Abbasid caliph weakened. Al-Mawardi allowed local governors to wage jihad on the caliph's behalf. This decentralization of jihad became especially pressing after the Crusades. Ali ibn Tahir al-Sulami argued that all Muslims were responsible for waging wars of self-defense Al-Sulami encouraged Muslim rulers from distant lands to assist Muslims who were under attack.