Салмонов ғимаратының екі тірегі: Боаз және Яхин

Two pillars on the porch of Solomon's Temple

According to the Bible, Boaz ( Bōʿaz) and Jachin (יָכִין Yāḵīn) were two copper, brass or bronze pillars which stood on the porch of Solomon's Temple, the first Temple in Jerusalem. They are used as symbols in Freemasonry and sometimes in religious architecture. They were probably not support structures but free standing, based on similar pillars found in other nearby temples.

The pillars were nearly six feet (1.8 metres) thick and 27 feet (8.2 metres) tall. The eight foot (2.4 metres) high brass chapiters, or capitals, on top of the pillars bore decorations, in brass, of lilies. The original measurement as taken from the Torah was in cubits, which records that the pillars were 18 cubits high and 12 cubits around, and hollow—four fingers thick. Nets of checkerwork covered the bowl of each chapiter, decorated with rows of 200 pomegranates, wreathed with seven chains for each chapiter, and topped with lilies (, 7:41–42 KJV (41–42)). The pillars did not survive the destruction of the First Temple; Jeremiah reports: "The Chaldeans broke up the bronze columns of the House of the Lord". II Kings has a similar account. The pillars were carried away in pieces for ease of transportation. When the Second Temple was built, the pillars were not returned, and there exists no record of new pillars being constructed to replace them.

According to rabbi Raymond Apple, "Jewish commentators on I Kings 7:21 maintain that it was when one stood inside the building and looked out toward the entrance in the east" that Jachin was on the right (to the south) and Boaz was on the left (to the north).

According to the first century Romano Jewish scholar Josephus' book Antiquities of the Jews, Jachin (Hebrew יָכִין yakin "He/it will establish") stood on the right on the portico of Solomon's Temple, while Boaz (Hebrew בֹּעַז boʿaz "In him/it [is] strength") stood on the left, and the two were made by a Canaanite craftsman named Hiram. An explanatory note by William Whiston on paragraph 6 of the same chapter, explains this as agreeing with the opinion of the Jewish commentators. Similar pillars intended to represent Boaz and Jachin also exist in Würzburg Cathedral (Germany) and Dalby Church (Sweden). Columns representing Boaz and Jachin can be found in most Masonic lodges and are emblematic of their use in Masonic ritual. The pillars are part of a symbolic use of Solomon's Temple itself. Jakin, an incorporated town in the U. S. state of Georgia, takes its name from the pillar. Some variants of the Tarot card The High Priestess depict Boaz and Jachin.

Russell Hoban's novel The Lion of Boaz Jachin and Jachin Boaz (1973) has two characters named after the pillars. In the 2002 anime series Gundam SEED, the approaches to Coordinator space habitats in lunar orbit are guarded by a pair of asteroid fortresses named "Boaz" and "Jachin Due". In The Lost Symbol (2009), a Robert Langdon novel by Dan Brown, the villain Mal'akh has images of Boaz and Jachin tattooed on his legs.