وَالْأَعْوَاضُ الْمُشَارُ إِلَيْهَا لَا يَحْتَاجُ إِلَى مَعْرِفَةِ مِقْدَارِهَا فِي جَوَازِ الْبَيْعِ.
Translation: For specifically identified exchange items, precise knowledge of their quantity is not required for the validity of the sale.
An identified exchange item is the particular thing visibly selected for the transaction. A valid lump-sum sale does not invariably require a separate exact weight or count.
Example: “I sell this entire identified bag for 800 rupees.” Here the specific bag is identified and one total price is agreed. A separate per-kilogram pricing formula creates different issues handled later.