Āhāra: Nutriment
Nutriment is the food a body runs on, counted among the conditions that keep any life going. Bread lying on the ground in a wilderness makes that dependence impossible to miss: no field, no granary, nothing standing between morning hunger and whatever happens to be there. At a settled table the dependence is just as total and entirely invisible, which is why forty years without a table teaches what a harvest cannot.
Santuṭṭhi: Contentment
Contentment is satisfaction with the portion that comes. A monk carries a bowl and eats whatever is dropped in it, which is the manna arrangement exactly: a day's worth, gathered in the morning, useless to hoard since a second day's worth only bred worms. Food the fathers never knew arrives with no habits attached to it, no old recipe to prefer, no memory of better.
Māna: Conceit
Conceit is the "I am" that keeps measuring itself against others. Being fed by something you did not plant, on ground where nothing could be planted, cuts against any notion of standing by your own arm. Humbling works here by subtraction: the supports come away one at a time until nothing on the list of what holds you up is your own doing.
Khanti: Patient endurance
Patient endurance is the capacity to bear hardship without souring. A test run over forty years works through sameness: the same food each morning, the same road, no arrival in sight. Whether a person holds steady across that stretch is the thing being proved, and the murmuring against the light bread is where it came apart.
Anupubbasikkhā: The gradual training
The gradual training is a path that yields its result in order, at the end. Good at the latter end has the shape of the ocean floor, sloping so evenly that the depth registers only when you look back at the shore. Nothing in the manna years resembled the good they were for, and that is the ordinary shape of a long training rather than evidence against it.