Responsa for Bava Kamma 208:17
אמרי
— It may, however, be said that the misappropriated article was no longer extant in this case.<span class="x" onmousemove="('comment',' And as according to the Mishnaic ruling infra 111b the son could in such a case not be made responsible for the misappropriated article, by committing perjury he rendered himself subject to Lev. V, 4, but not to the Fifth etc. ibid. 24-25. ');"><sup>29</sup></span> But if the misappropriated article was no longer extant, why should he pay even the principal?<span class="x" onmousemove="('comment',' Since the Mishnaic ruling, infra loc. cit. is to apply. ');"><sup>30</sup></span> — No; it might have application where real possessions were left.<span class="x" onmousemove="('comment',' In which case the heirs are liable, v. loc. cit. ');"><sup>31</sup></span> (But were even real possessions to be left, of what avail would it be since the liability is but an oral liability, and, as known,<span class="x" onmousemove="('comment',' V. B.B. 42a, 157a and 175a. ');"><sup>32</sup></span> a liability by mere word of mouth can be enforced neither on heirs nor on purchasers?<span class="x" onmousemove="('comment',' As a liability which is not supported by a legally valid document or judicial decision is only personal with the debtor. ');"><sup>33</sup></span> — It may however be said
Teshuvot Maharam
A. Even A's producing a written consent from the widow would be of no avail unless he can also prove through witnesses that the widow instructed and ordered the writing of the instrument. Should he not be able to do so, he will have to remove the building from the widow's premises and pay her rent for the time his building stood thereon. Should A produce such witnesses, his contract with the widow's son and son-in-law will be non-voidable even though A did not yet pay the rent for the full ten years. Although the widow did not personally instruct her son and son-in-law to rent her premises to A, but sent such instructions in writing — such manner of sending instructions not being acceptable in talmudic law — nevertheless the son and son-in-law became the widow's agents, since it is the usual custom of merchants to accept as valid written instruments, and since the custom of merchants prevails in business transactions.
This Resp. is addressed to R. Eliezer ha-Kohen, and R. Eliezer.
SOURCES: Pr. 698.