From Wikipedia:
The somoni (Tajik: cомонӣ, ISO 4217 code: TJS) is the currency of Tajikistan. It is subdivided into 100 diram (Tajik: дирам). The currency is named after the father of the Tajik nation, Ismail Samani (also spelled Ismoil Somoni).
Abu Ibrahim Ismail ibn Ahmad (892–907), better known as Isma'il ibn Ahmad, was the Samanid amir of Transoxiana and Khorasan. His reign saw the emergence of the Samanids as a powerful force. He was the son of Ahmad ibn Asad and a descendant of Saman Khuda, the founder of the Samanid dynasty who renounced Zoroastrianism and embraced Islam.