Reference for Bava Batra 299:6
איבעיא להו עבדא כמקרקעא או כמטלטלא דמי אמר ליה רב אחא בריה דרב אויא לרב אשי תא שמע המוכר את העיר מכר בתים שיחין ומערות ומרחצאות ובית הבדין ובית השלחין אבל לא את המטלטלין ובזמן שאמר היא וכל מה שבתוכה אפילו היו בה בהמה או עבדים הרי כולן מכורין אי אמרת בשלמא כמטלטלא דמי משום הכי לא מיזדבן ברישא אלא אי אמרת כמקרקעא דמי אמאי לא מיזדבן
which is described [as] 'any quantity whatsoever'.<span class="x" onmousemove="('comment',' Elsewhere, however, where 'any quantity whatsoever' (kol shehu), is mentioned no minimum is required. Hence R. Joseph's objection (supra 149b), against the interpretations of the elders is well founded. ');"><sup>24</sup></span> [It is] obvious [if a person] said, 'My movables [shall be given] to X', [the latter] acquires possession of all the things he used except wheat and barley. [If he said], 'All my movables [shall be given] to X'.[the latter] acquires possession even of wheat and barley and even of the upper millstone,<span class="x" onmousemove="('comment',' Since It is sometimes removed from its place, it is included in the movables. ');"><sup>25</sup></span> except the lower millstone.<span class="x" onmousemove="('comment',' Which is always kept in its place on the ground. ');"><sup>26</sup></span> [If he said], 'All that can be moved', [the latter] acquires possession even of the lower millstone.<span class="x" onmousemove="('comment',' It can be removed from its place since it is not actually fixed to the ground. ');"><sup>27</sup></span> The question. [however]. was raised: Is a slave regarded as real estate or as movables!<span class="x" onmousemove="('comment',' Though, as regards Biblical laws, slaves are regarded as 'land' or 'real estate' as, e.g., in the case of oaths and acquisition by means of money, deed and possession, the question here is whether in the course of ordinary conversation people describe a slave as 'real estate' or as 'movables'. ');"><sup>28</sup></span>