Reference for Sanhedrin 54:3

אמר ליה רב פפי הני מילי היכא דלא סתם לן תנא כרבי מאיר הכא סתם לן תנא כרבי מאיר

FATHER'S BROTHER, MOTHER'SBROTHER, SISTER'S HUSBAND, THE HUSBAND OF ONE'S PATERNAL OR MATERNAL AUNT,A STEP-FATHER, FATHER-IN-LAW, AND BROTHER-IN-LAW [ON THE SIDE OF ONE'S WIFE];ALL THESE WITH THEIR SONS AND SONS-IN-LAW; AND ONE'S STEPSONHIMSELF.<span class="x" onmousemove="('comment',' I.e., he alone, and not his children etc. ');">¹⁶</span>

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