One man and his dog coming to pass? (5,7)
'one man' is the definition.
(I have seen 'Holy man ' mean 'saint' so perhaps 'man' could also mean 'saint')
I don't understand the remainder of the clue.
(Other definitions for saint that I've seen before include "Beatified person" , "See 6" , "Canonised person" , "Good woman" , "paragon!" .)
'his dog coming to pass?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'one man and' is the wordplay.
I cannot really see how this works, but
'one' could be 'i' (Roman numeral) and 'i' is found in the answer.
'man' could be 'bernard' and 'bernard' is present in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
The remaining letters 'sat' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for saint bernard that I've seen before include "Alpine breed of dog" , "Large breed of dog" .)