Literally, you are so busy that you have no time to get rich.
Ye canna mak a silk purse out o' a sow's lug.
Ye canna preach oot o' your ain pu'pit.
Applied to persons who are diffident in the house of a stranger, or who are backward in describing an article out of their usual way of business.
Ye canna put an auld head upon young shouthers.
Ye canna see the wood for trees.
On a par with the man who went to London, but could not see the town for houses!
Ye come o' the house o' Harletillem.
"To 'harle,' to draw to one's-self by gripping or violent means."—Jamieson.
Ye come o' the M'Taks, but no o' the M'Gies.