Anima Astrologiae or A Guide for Astrologers by William Lilly 1676

The 82nd is to Consider, Whether the Significator receive disposition or virtue from any Planet, Fortune or Infortune. If from a Fortune it signifies good; and the better if such Fortune be in a good condition. If from an Infortune, to the contrary; and so much the worse by how much the more weak and afflicted he is.

83.Whether the Fortunes and Infortunes be equally strong