«وعلى هذا حكم المزارعة»
“The same applies to sharecropping.”
In a two-party sharecropping agreement, a specified fraction of produce for one partner fixes the balance for the other: one-quarter for one leaves three-quarters for the other, within that single agreed allocation.
«لو أوصى لفلان وفلان بألف، ثم بيَّن نصيب أحدهما كان ذلك بيانًا لنصيب الآخر»
“If a thousand is bequeathed jointly to two people and the share of one is then specified, the other's share is thereby clarified.”
If a joint bequest of 1,000 allocates 400 to Zayd, the remaining 600 belong to Amr, provided the total is assigned only to those two beneficiaries. Both cases illustrate the same principle: identifying a part of a known whole fixes its necessary remainder.