English: Leaning is not practiced on a [private] bamah, as it is written “he shall bring it before Hashem, and he shall lean.”
In the sugya: “Before Hashem” ties semicha to the Mishkan/Temple framework. When private bamot were permitted, offerings could be brought there — but semicha was not required on a private bamah. The leaning rule belongs to the centralized service.
Type of Learning
Diyuk on “before Hashem” — semicha is not practiced on a private bamah.
What Is Learned
On a private bamah (when bamot were permitted), semicha is not required. The Temple/Mishkan framework governs the leaning requirement; “before Hashem” is what locks semicha to that setting.