Given the task definition and input, reply with output. This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

In another incident, around 1177, he was captured in a raid and held prisoner by his father's former allies, the Tayichi'ud. The Tayichi'ud enslaved Temujin (reportedly with a cangue, a sort of portable stocks), but with the help of a sympathetic guard, the father of Chilaun (who later became a general of Genghis Khan), he was able to escape from the ger (yurt) in the middle of the night by hiding in a river crevice.[citation needed] It was around this time that Jelme and Bo'orchu, two of Genghis Khan's future generals, joined forces with him. Temujin's reputation also became widespread after his escape from the Tayichi'ud.
Who captured and held Temujin prisoner around 1177?