Anima Astrologiae or A Guide for Astrologers by William Lilly 1676

The 33rd Consideration is, To see whether either of the Infortunes be the Significator of anything, and be joined to another Infortune impeding him, or has joined to him the Lord of the Ascendant or the Moon, by a square or Opposition; for then this Infortune will perfect the business, but the business will not be good, or rather it will be destroyed after it seems perfected. But if the Infortune that Impedes be the lighter of the two, so that he apply to a Conjunction, with the Significator, it will hinder less than if the Significator apply to the other.

34.On what to ground Judgment