Selling livestock for livestock on credit

The questioner:
Shaykh Abdullah, there is no riba (usury or interest) in the various types of livestock. There is no riba. The various types of livestock, for example, if I take a camel.

The Shaykh:
If you exchange one camel for two camels, or one camel for four camels, on credit.

The questioner:
Thank you.

The presenter:
Thank you, Your Eminence the Shaykh.

The Shaykh:
It has its basis and its measure.

The questioner:
I mean, for example, if.

The Shaykh:
You buy and say, "I will sell you two camels of such and such age, in the future." He narrated to us

The questioner:
I am in a lecture.

The Shaykh:
Credit for credit is not permissible, but cash for credit does not contradict the ruling. So if the cash is good, raising its value above that in age, or above that in quality and nobility, for a known term, there is no harm, correct?

The questioner:
Except in this case.

The Shaykh:
Or a good sheep today for two sheep for a known term, or three, of such and such age and such and such age.

The questioner:
Some of the Bedouin take a ram, for example, slaughter it, and give him a ewe.

The Shaykh:
The sick person.

The questioner:
Cash for cash, but let's go.

The Shaykh:
Cash for cash.