Their grandfather Yunis al-Faizi excelled in business, and managed to purchase the muqata'a "Maal Yunis" which extended from the borders of Arba' Nahran to al-Jayya to Umm al-'Agareeg in Bab al-Salalma. He endowed his muqata'a to his descendants for their benefit. The family often held custodianship of the Husayn and Abbas' shrines. It is also the only Alid family to have two designated graveyards in the Husayn shrine, one near the old eighth "kishwaniya" (booth for depositing footwear), and the other near the tenth. It is also one of the largest Alid families in Karbala. The family branched into five clans:    Al Dhiya al-Din () branched off Dhiya al-Din al-Faizi. They own lands in "Umm Ramila" in Shfatha, and in Karbala, they own the famous farm, "Dhway," which they were on some occasions named after. In 1799, Dhway was endowed by Yahya, to his son, Dhiya al-Din and his descendants, for the benefit of the Husayn Shrine. The family held the custodianship of the Abbas shrine numerous times throughout the 20th century. Al Tajir () branched off Ali 'al-Tajir' al-Faizi. Ali was named "al-Tajir" (the merchant), due to his frequent travels to East Asia for trade. The family owns farms known as "Umm al-Sudan" in mahalat Al Faiz (now known as al-Hayabi), that Hassan al-Tajir endowed to his descendants in 1680. The family served in the holy Husayn and Abbas shrines'. Al Ouj () branched off Muhsin Ouj al-Faizi. They have a partful ownership in Tumah III's Fidan al-Sada muqata'a. They also own parts of the farms known as "Maal al-Saghir", in mahalat Al Faiz, endowed in 1847 and "Maal Ju'an", near mahalat Al Faiz, endowed in 1853. The family served in the holy Husayn and Abbas shrines'. Al Sayyid Amin () branched off Muhammad-Amin al-Faizi, also known as Sayyid Amin al-Faizi.