one loaf from his bread, he has broken his oath, because the context indicates that meaning: he singled out this particular baker because he does not bake well—he leaves the bread underbaked, or does not put salt in it, or for similar reasons that led him to swear not to eat his bread.
If he says, “By Allah, I will certainly eat this loaf,” and eats only part of it, he has broken his oath, because it is possible to eat it all.
In reality, this issue is a branch of what has preceded: one refers first to the intention of the person taking the oath, if the wording can bear it; then to the reason for the oath; then to specification; and then to what the term encompasses. These are the four levels upon which all the oaths of those who swear are based.