The contracts made by Erin were in blank, so that Daimon could add the conditions he wanted to them, depending on the situation, which in this case were quite simple.
First, from this point onwards and until they were back at their respective galaxies, they couldn't harm each other in any form, second, that included betrayal, forcing the others to risk their lives against their will and the like, the second condition was that no matter the circumstances, Tessa and Femi would never reveal Daimon's identity as Gabriel, unless he or Aisha directly allowed them to.
The third condition was that Daimon would protect them to the best of his capacities, as long as they were sided with him.
