What do these two lines mean
"Merchants frowned at

Mother's strange instructions

Read the passage. “ah, are you digging on my grave my loved one? —planting rue? ” —“no: yesterday he went to wed one of the brightest wealth has bred.” in “ah, are you digging on my grave? ” by thomas hardy, what has happened to the dead woman’s widower? he has moved away. he has remarried. he has come to visit. he has died.

The conventions of a number of the states, having at the time of their adopting the constitution, expressed a desire, in order to prevent misconstruction or abuse of its powers, that further declaratory and restrictive clauses should be added: and as extending the ground of public confidence in the government, will best ensure the beneficent ends of its institution. what is meant by the phrase "further declaratory and restrictive clauses"?

Can someone explain this to me clearly plz