The nomads store hunger in their (empty) wallets, because they would feast on it later. Generally, they feel no inclination for food, and (as for water) they gulp down thirst. Latif says: “the Lahutis have reduced their person to the semblance of a fibre made out of the flowers of ‘Sar’ grass” (i.e. they have annihilated it.) After having crossed the desert, the holy men have got near the oasis. It may also mean that they had passed the stage of self-annihilation synonymous with nothingness and arrived near the stage of absorption in the Prime).
Note: It is said that Hazrat Adham and Hazrat lbrahim of Herat had a little dialogue on the following lines while they were on their way to holy Mecca for performance of Hajj:
H.Ibrahim:Sir! What is your conception of abstinence, contentment and patience?
H. Adham:I do not ask for anything. Whatever little I receive occasionally I am content with it. If I receive nothing, I am patient.
H. Ibrahim: That is exactly what dogs of my village do.
H. Adham: That is interesting! Please let me know your version of these stages.
H. lbrahim: I am content, nay, grateful when I receive nothing. But when I receive anything I just give it away to others, and forget about it with absolute patience and contentment.
TRADITION: Fasting is the food of Allah whereby He revives the bodies of the sinners.

Hunger in their bags, yogis rejoice at that,
No desire for food they have, thirst they pour and drink,
The ascetics have conquered all their desires,
Crossing wilderness they reached where they aspired.