The first teisho of Diamond Sangha sesshin traditionally focuses on the koan ‘mu’, a primary koan – a koan that opens the way –  even though it is a gateless barrier.  Mumon’s commentary on this case is a rare case of hearing how to work with a koan – which translates as ‘a matter to be resolved”.

This teisho was given by Gillian Coote, roshi on Day 1 at Spring sesshin 2023, at Kodoji