Ye'll let naething tine for want o' seeking.
Yellow's forsaken, and green's forsworn, but blue and red ought to be worn.
In allusion to the superstitious notions formerly held regarding these colours.
Ye'll ne'er be auld wi' sae muckle honesty.
Ye'll ne'er cast saut on his tail.
Ye'll ne'er craw in my cavie.
This means that such a person will never be welcomed in my house.
Ye'll ne'er grow howbackit bearing your friends.
From this we can infer that the person addressed does not allow himself to be troubled by his friends.
Ye'll ne'er harry yersel wi' your ain hands.