Case 15: Yunmen’s Upside Down Statement
- Title in Sullivan (2021): Yunmen’s Upside Down Statement
- Title in Cleary and Cleary (1992): Yun Men’s Upside-Down Statement
- Title in Sekida (2005): Ummon’s “No Preaching on Oneness”
- Named characters (in Pinyin):
- Yunmen Wenyan (864-949)
- Named characters (in Wade-Giles):
- Yun Men
- Named characters (in Japanese):
- Ummon
- Other koan collections:
- The True Dharma Eye, Case #95
- Historical commentaries:
- Hakuin Ekaku and Tenkei Denson (contained in Secrets of the Blue Cliff Record, Thomas Clearly, 2002)
- Modern commentaries:
- Matthew Juksan Sullivan (contained in The Garden of Flowers and Weeds, 2021)
- Gyomay Kubose (contained in Zen Koans, page 121, 1973)
- John Daido Loori (contained in The True Dharma Eye, 2005)
- Shunryu Suzuki (dharma talk and pdf article)
- Stefano Mui Barragato (dharma talk)
- Dainin Katagiri (audio dharma talk)
- Jay Rinsen Weik (audio dharma talk)
- Kurt Spellmeyer (audio dharma talk 1 and 2)
- Yamada Kôun (dharma talk with paywall)
- Scholarly commentaries:
- Steven Heine (contained in Chan Rhetoric of Uncertainty in the Blue Cliff Record, page 209, 2016)
- Urs App (contained in Zen Master Yunmen, page 142, 2018)