Takar was a pre-industrial Delta Quadrant planet whose people worshipped two stranded Ferengi, Arridor and Kol, as the prophesied Great Sages until Voyager's crew intervened in 2373.
Takar is the setting of the third-season episode False Profits. Its inhabitants, the Takarians, have a Bronze Age culture and an epic poem, the Song of the Sages, foretelling holy visitors who arrive from the sky in fire.
Seven years earlier the Ferengi Arridor and Kol were swept through the Barzan wormhole, as shown in The Next Generation episode The Price. Landing on Takar, they fitted the prophecy neatly and set about remaking the economy around the Rules of Acquisition, enriching themselves with a replicator.
Janeway decides the Federation bears some responsibility. Neelix poses as the Grand Proxy to order the pair home, and the crew finally stage the verses describing the Sages' departure.