Is it permissible to sell rice without weighing it after purchasing a ton of it packaged in sacks, with each sack weighing 50 kg, and receiving it without weighing?

There is no objection to selling weighed goods—like bananas in bags of a specific weight—by relying on the customary weight to avoid hardship and difficulty. This is similar to selling based on a program that the Malikis permitted. Some scholars also permitted selling by relying on the seller's measurement without the buyer's measurement.