‘When Mazu heard that Damei lived on the mountain, he sent a monk to call upon him and ask the question, “When you saw Master Mazu, what did he say that caused you to come and live on this mountain?”
Damei said, “Master Mazu said to me, ‘Mind is Buddha.’ Then I came here to live.”
The monk said, “These days Master Ma’s teaching has changed.”
Damei said. “What is it?”
The monk said, “Now he says, ‘No mind. No Buddha.'”
Damei said, “That old fellow just goes on and on, confusing people. Let him go ahead and say, ‘No mind. No Buddha.’ As for me, I still say ‘Mind is Buddha.’
The monk returned and reported this to Master Mazu.
Mazu said, “The plum is ripe.”‘ (Zen’s Chinese Heritage)
This is another repost, but I think my commentary on it may be a little different. While there may be many teachers – from Buddha himself onwards – telling students not to stick to one particular teaching, Master Mazu recognises that Damei has fully integrated what he told him and is living from that place; Damei knows ‘No mind. No Buddha’ just as fully.