Reference for Bava Kamma 232:4

ואם שכרו תייר ההולך לפניהם מחשבין אף לפי נפשות ולא ישנו ממנהג החמרין

But if they hire a guide to go in front of them, the calculation will have to be made also<span class="x" onmousemove="('comment',' 'Also' is missing in J. B.M. VI, 4. ');">⁷</span> according to the number of souls in the caravan,<span class="x" onmousemove="('comment',' For a guide is vital also to safeguard life; as to possessions cf. the difference in reading between the text here and J. B.M. VI, 4. ');">⁸</span>

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