Reference for Bava Kamma 140:10

גנב ומכר בשבת [וכו']: והתניא פטור

— [We must say] therefore that it excludes a case where two witnesses testify that there was one hair on her back and two other witnesses state that there was one hair in front, as in this case the one set testify that she was still a minor<span class="x" onmousemove="('comment',' As the appearance of one hair is no sign of puberty; but where different witnesses testify to different years, each year is considered a 'whole matter'. ');">¹⁰</span>

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