Ki te ai he toki, if there should be an axe.
1. With "kia".
Kia ai he toki, let there be an axe, i. e. when, or, as soon as there is an axe.
2. With "kei".
Kei ai he toki, lest there should be an axe.
[VIII. ADJECTIVES AND PARTICIPLES] [A]
with the verb substantive.