expression, noun
norito read at a great purification event
A specific Shinto ritual prayer (norito) recited during the Ōharae (Great Purification) ceremony, typically held in June and December.
大祓の詞は、六月と十二月の大祓式で奏上される。
The Ōharae no kotoba is recited at the Great Purification ceremonies in June and December.
大祓 is the Great Purification ceremony itself; 大祓の詞 is the prayer text recited during that ceremony.
Compound of 大祓 (ōharae, 'great purification') + の (possessive particle) + 詞 (kotoba, 'words, prayer'). The term is specific to Shinto liturgy.