Final answer:
Tobias likely caught the grains by a labor-intensive method, symbolizing perseverance and effort, akin to carefully sifting gold from a stream or meticulously winnowing wheat.
Step-by-step explanation:
How Tobias caught the grains is likely metaphorical or descriptive of a process he undertook. From the various excerpts provided, it's possible to infer that Tobias may have gathered grains by a manual or painstaking process, much like sifting gold from a stream or winnowing wheat. This methodical collection could involve separating the grains from chaff or debris, just as the characters in the narratives found precious items or gold through diligent searching and processing of materials. Tobias's method could symbolize perseverance and effort in acquiring something valuable.