Which preposition to use with zillah

of Occurrences 1%

Not unfrequently we would meet in the zillah of a morning, when we would invariably make for the nearest patch of grass or jungle, and enjoy a hunt together.

with Occurrences 1%

When I first went to India we used to take out our pig-spear over the zillah with us as a matter of course, as we never knew when we might hit on a boar.

Which preposition to use with  zillah