Study Shabbat folio 157B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
and there was a cracked roofing placed atop the two houses. If the roofing was intact it would have the legal status of a tent over a corpse, rendering everything in the alleyway, and, through the windows, everything in the houses, ritually impure. However, since the roofing was cracked and the corp
The Mishnah concludes: And from their statements and their actions, we derived that one may seal a window, and measure, and tie a knot on Shabbat. The Talmud relates: Ulla happened to come to the house of the Exilarch. He saw Rabba bar Rav Huna sitting in a tub [avna] of water and measuring it. He