English: “You shall not sow your vineyard with mixed seeds” — why do I need this? Is it not already stated “your field you shall not sow with mixed seeds”? This teaches that whoever maintains kilayim in a vineyard transgresses two negative commandments.
On the daf / in context: The Sifrei notes the parallel prohibition in Vayikra 19:19 concerning a field. The repetition for a vineyard creates a second, independent lav, so that one who sows mixed species in a vineyard violates both the general field prohibition and the specific vineyard prohibition.
Type of Learning
Ribbui / double lav from the juxtaposition of the two kilayim verses (field and vineyard).
What Is Learned
Sowing mixed species in a vineyard incurs two separate prohibitions: the general prohibition of kilayim in a field and the specific prohibition of kilayim in a vineyard.