Reference for Shevuot 9:2
אין בעלמא כללי ופרטי דריש והכא היינו טעמא כדתנא דבי ר' ישמעאל
In the waters, in the waters - twice.<span class="x" onmousemove="('comment',' Lev. XI, 9: These may ye eat of all that are in the waters: whatsoever hath fins and scales in the waters, in the seas, and in rivers, them may ye eat. In the waters is a general statement; in the seas and in the rivers is a particular. In this verse the particular is not between the two general statements, but follows them. In such a case, R. Ishmael's Academy assert, the verse is expounded on the principle of 'amplifications and limitations'. Rabbi agrees, and he therefore expounds similarly the verse about the redemption of the first-born.');"><sup>3</sup></span> This is not 'generalisation and specification', but 'amplification and limitation'.