Adam Clarke on Song of Solomon 5:3

I have put off my coat - The bride must have been in a dream or in much disorder of mind to have made the frivolous excuses here mentioned. The words relate to the case of a person who had gone to take rest on his bed. As they wore nothing but sandals, they were obliged to wash their feet previously to their lying down. I have washed my feet, taken off my clothes, and am gone to bed: I cannot therefore be disturbed. A Hindoo always washes his feet before he goes to bed. If called from his bed, he often makes this excuse, I shall daub my feet; and the excuse is reasonable, as the floors are of earth; and they do not wear shoes in the house - Ward.