English: “All” — to include interest, merchandise and all other profits that are liable to tithe.
On the daf / in context: Some early sources extend the language of “all the produce of your seed” to commercial profits; the practical ruling follows the narrower view that only agricultural produce is subject to biblical ma’aser.
Type of Learning
Derash on the verse (Sifrei tradition) — possible inclusion of commercial profit.
What Is Learned
There is a tradition that expands “all the produce” to include certain commercial gains, though the normative law limits biblical ma’aser to agricultural produce.