Talmud for Eruvin 76:1
הרי זה חמר גמל
Behold this [man represents a combination of] an ass-driver and a camel-driver.<span class="x" onmousemove="('comment',' Cf. relevant note on the Mishnah supra 35a. It is uncertain whether the two days are to be regarded as one entity of holiness or two entities. In the former case the 'erub for the first day is also effective for the second one and the man is consequently forbidden to walk the two thousand cubits from the town in the opposite direction of the 'erub though he would be allowed four thousand cubits from the town in the direction of the 'erub (which is his 'abode' for the day and from which point he is entitled to walk two thousand cubits in all directions) . In the latter case the 'erub for the first day is not effective for the second, and the man is consequently forbidden on that day to walk more than two thousand cubits from the town in the direction of the 'erub though (since the town is his abode) he would be permitted to walk the two thousand cubits from the town in the opposite direction of the 'erub. Owing to the uncertainty both restrictions are imposed and the man may walk only the two thousand cubits between the town and his 'erub.');"><sup>1</sup></span> R'Simeon B'Gamaliel and R'Ishmael son of R'Johanan B'Beroka said: If he prepared an 'erub with his feet on the first day he need not prepare one with his feet for the second day<span class="x" onmousemove="('comment',' Both days being regarded as one entity of holiness or as one long day.');"><sup>2</sup></span>