(1) Abbasid Caliphate
(2) 132-656 H

هَاجَمَهُ عَهْدُ بَني العَبَّاسِ
وَمَعْدِنُ الأَفْضَالِ وَ الأَكَارِم

وَالحُرُمَاتُ و الثُّغُوْر محصنةُ

مُلَقَّبٌ بِعَصْرِ الاِزْدِهَارِ

وحِينَ سَاءَ الأَمَوِيْ في النَّاسِ دَوْلَتُهُمْ كَثِيرَةُ المَكَـارِمْ
دُنْيَاهُمُ بِكُلِّ خَيرٍ عَامِرَهْ

وَعَهْدُهُمْ في كُلِّ عُرْفِ قَارِىْ

(1) The Abbasid Caliphate (/əˈbæsᵻd/ or /ˈæbəsᵻd/ Arabic: الخلافة العباسية‎‎ al-Khilāfah al-‘Abbāsīyah) was the third of the Islamic caliphates to succeed the Islamic prophet Muhammad. The Abbasid dynasty descended from Muhammad's youngest uncle Abbas ibn Abd al-Muttalib (566–653 CE), from whom the dynasty takes its name.

(2) Their succession lasted for 524 years, It began the year 132 H after  the killing of last Umayyad caliph Marwan II, and ended in the  year of 656 H  by the killing  of the last Abbasid caliph Al-Musta'sim.