Rey, Iran in the context of "Capitals of Iran"

The Ghaznavid dynasty (Persian: غزنویان Ġaznaviyān) was a Persianate Muslim dynasty of Turkic mamluk origin. It ruled the Ghaznavid Empire or the Empire of Ghazni from 977 to 1186, which at its greatest extent, extended from the Oxus to the Indus Valley. The dynasty was founded by Sabuktigin upon his succession to the rule of Ghazna after the death of his father-in-law, Alp Tigin, who was an ex-general of the Samanid Empire from Balkh.

Sabuktigin's son, Mahmud of Ghazni, expanded the Ghaznavid Empire to the Amu Darya, the Indus River and the Indian Ocean in the east and to Rey and Hamadan in the west. Under the reign of Mas'ud I, the Ghaznavid dynasty began losing control over its western territories to the Seljuk Empire after the Battle of Dandanaqan in 1040, resulting in a restriction of its holdings to modern-day Afghanistan, Pakistan and Northern India.

Bahrām Chōbīn (Persian: بهرام چوبین) or Wahrām Chōbēn (Middle Persian: 𐭥𐭫𐭧𐭫𐭠𐭭; died 591), also known by his epithet Mehrbandak ("servant of Mithra"), was a nobleman, general, and political leader of the late Sasanian Empire and briefly its ruler as Bahram VI (r. 590–591).

Son of general Bahram Gushnasp and hailing from the noble House of Mihran, Bahram began his career as the governor of Ray, and was promoted to the army chief (spahbed) of the northwestern portions of the empire after capturing the Byzantine stronghold of Dara, fighting in the war of 572–591. After a massive Hephthalite-Turkic invasion of the eastern Sasanian domains in 588, he was appointed as the spahbed in Khorasan, beginning a campaign that ended in a decisive Iranian victory.

The Shāh Abdol-Azīm Shrine (Persian: شاه عبدالعظیم; Arabic: مرقد الشاه عبد العظيم الحسني) is a Twelver Shi'ite funerary monument and religious complex, located in Rey, in the province of Tehran, Iran. The complex contains the tomb of ‘Abdul ‘Adhīm ibn ‘Abdillāh al-Hasanī (aka Shah Abdol Azim). Shah Abdol Azim was a fifth generation descendant of Hasan ibn ‘Alī and a companion of Muhammad al-Taqī. He was entombed here after his death in the 9th century CE.

Adjacent to the shrine, within the complex, are the mausolea of Imamzadeh Tahir (son of the fourth Shia Imam Sajjad) and Imamzadeh Hamzeh (brother of the eighth Twelver Imām - Imām Reza).

Abd al-Rahman ibn Muhammad ibn al-Ash'ath (died 704), commonly known as Ibn al-Ash'ath after his grandfather, was a prominent Arab nobleman and military commander during the Umayyad Caliphate, most notable for leading a failed rebellion against the Umayyad viceroy of the east, al-Hajjaj ibn Yusuf, in 700–703.

Ibn al-Ash'ath was a scion of a noble family of the Kinda tribe that had settled in the Arab garrison town of Kufa in Iraq. He played a minor role in the Second Fitna (680–692) and then served as governor of Rayy. After the appointment of al-Hajjaj as governor of Iraq and the eastern provinces of the Caliphate in 694, relations between al-Hajjaj and the Iraqi tribal nobility quickly became strained, as the policies of the Syria-based Umayyad regime aimed to reduce the Iraqis' privileges and status. Nevertheless, in 699, al-Hajjaj appointed Ibn al-Ash'ath as commander of a huge Iraqi army, the so-called "Peacock Army", to subdue the troublesome principality of Zabulistan, whose ruler, the Zunbil, vigorously resisted Arab expansion. In 700, al-Hajjaj's overbearing behaviour caused Ibn al-Ash'ath and the army to revolt. After patching up an agreement with the Zunbil, the army marched back to Iraq. On the way, the mutiny against al-Hajjaj developed into a full-fledged anti-Umayyad rebellion and acquired religious overtones.