Carry coals to Newcastle. [ Proverb ]

Glowing coals will be sparkling. [ Proverb ]

All that are black, dig not for coals. [ Proverb ]

They that burn you for a witch lose all their coals. [ Proverb ]

He that thinks himself a cuckold carries live coals in his heart. [ Proverb ]

Good deeds in this life are coals raked up in embers, to make a fire next day. [ Sir T. Overbury ]

Jealousy is cruel as the grave: the coals thereof are coals of fire, which hath a most vehement flame. [ Bible ]

He that blows the coals in quarrels he has nothing to do with, has no right to complain if the sparks fly in his face. [ Ben. Franklin ]

If thine enemy hunger, feed him; if he thirst, give him drink: for in so doing thou shalt heap coals of fire on his head. [ Bible ]