He's John Tamson's man.
"'Atweel, Cuddie, ye are gaun nae sic gate,' said Jenny, coolly and resolutely. 'The deil's in the wife!' said Cuddie, 'd'ye think I am to be John Tamson's man, and maistered by women a' the days o' my life?' 'And whase man wad ye be? And wha wad ye hae to maister ye but me, Cuddie, lad?'"—Old Mortality.
He's laid down the barrow.
That is, "[he's cowpet the crans]," q. v.
He sleeps as dogs do when wives sift meal.
Meaning that a person is very sharp, and that he, figuratively, sleeps with one eye open.
He's lifeless that's faultless.
Implying that no one is without fault.
He's like a bagpipe, ne'er heard till his wame's fu'.
He's like a chip amang parritch—little gude, little ill.