Kommentar zu Könige I 7:24

Knobs. [Targum] Yonoson rendered וצורת ביעין [and the form of eggs].

Beneath its rim. [The knobs were located] in the lower three amohs which were square, for so did we learn in the Gemara in Maseches Eruvin, “The three lower ones were square and the two upper ones were round.”⁴⁰See Maseches Eruvin 14b. It is impossible for one to contain two thousand bas which equal one hundred and fifty ritual baths of purity of forty [bas], except in this manner as explained by our Rabbis in [Maseches] Eruvin. The upper ones were square and the lower ones round, it is impossible to say for it is written, that its rim was “circular all around.”⁴¹Above v. 23. He, therefore, says regarding these knobs, “for ten amohs compassing the sea round about,” because in the place that it was square, [a perimeter of] forty amohs has ten amohs on each side, but in the place that it is round it is impossible to say it has ten amohs [on each side] around.

The knobs were in two rows, cast together with it. Everything was poured together, [and] not that he attached the knobs to it after they had been poured, through nails or through soldering which is called soudure, in O.F.