Zabbaleen
The Zabbaleen ( ', ) is a word which literally means "garbage people" in Egyptian Arabic. The contemporary use of the word in Egyptian Arabic is to mean "garbage collectors". In cultural contexts, the word refers to teenagers and adults who have served as Cairo's informal garbage collectors since approximately the 1940s. The Zabbaleen (singular: ', ) are also known as Zarraba (singular: Zarrab), which means "pig-pen operators." The word ' came from the Egyptian Arabic word ' (, ) which means "garbage".
Muslim conquests of Afghanistan
The kingdom of Zabulistan (ar-Rukhkhaj) with its capital at Ghazna, where the king Zunbil or Rutbil resided, is mentioned by Chinese sources under the suzeranity of Jabghu of Turkestan. The significance for Arabs of the realm of Zun and its rulers was them preventing their campaigns from invading the Indus Valley through eastern and southern Afghanistan. It was only under the early Saffarids that mass-Islamization and conquests of the region took place unlike the plunder-raids or tribute levies of Arabs. The expeditions under Caliph al-Ma'mun against Kabul and Zabul were the last ones and the long conflict ended with the dissolution of the Arab empire following soon thereafter.