The Warning!

Ban offered one slice to the Yellow Armored as a reward for its courageous act. Although the effects might have dwindled even more compared to eating the whole fruit, he thought that letting the turtle have a taste was already generous enough. 

The turtle was surprised by his action and did not dare to bite the slice he just offered. So instead of urging it to eat the slice, Ban just left it on the ground beside it instead. He was not worried that the turtle would not be able to eat it as according to the System, once he sliced it up with that method, the hardness of the fruit would be extinguished and it would become a soft fruit that anyone will be able to eat, including mortals.