ok honum gaf hann alla ina beztu gripi sína hálfa við sik.
and - to him - gave - he - all - the - best
- animals - his - half - with - himself
and he offered half of all his best
livestock to him.
I was interpreting this to mean half of the whole herd.
But as I get into the next passage, I see that actually he is dedicating half of
each ANIMAL to Frey, so I guess this should be:
and - to him - gave - he - all - the - best
- animals - his - half - with - itself
and he offered half of each of his best
animals to him.