Talmud for Shabbat 30:3
אלא אתו אינהו גזור אגושא לתלות ואאוירא ולא כלום ואתו רבנן דפ' שנה גזור אגושא לשרוף ואאוירא לתלות
was decreed in Usha?<span class="x" onmousemove="('comment',' A city in Galilee, near Sepphoris and Tiberias, and the scene of an important Rabbinical synod or synods about the time of the Hadrianic persecution in the middle of the second century C.E. V. J.E. 'Synod of Usha'. ');"><sup>5</sup></span> For we learnt: <i>Terumah</i> is burnt on account of six doubtful cases [of uncleanness]: — [i] The doubt of Beth ha-Peras;<span class="x" onmousemove="('comment',' A field one square peras (peras half the length of a furrow — fifty cubits) in area, declared unclean because a grave was ploughed in it and the crushed bones scattered over the field, so that their exact position is not known, If terumah enters its atmosphere it must be burnt, though it is doubtful whether it was actually over the crushed bones. ');"><sup>6</sup></span>
Jerusalem Talmud Pesachim
The quote here is lacunary; there is missing the possible impurity of vessels found in the public domain., on the doubt of spittle187Which might be the source of biblical original impurity as body fluid of a woman menstruating or suffering from flux or a male sufferer from gonorrhea., on the doubt of human urine which is separate from animal urine188Urine was used industrially and as a household chemical. Animal urine is pure; human urine may be a source of biblical original impurity as body fluid of a person whose impurity is caused by his own body (Note 187)., on certain touch which is a doubt of impurity189If the fact that it touched the object in question is not in doubt; the only doubt is whether that object transmits impurity or not. on these one burns heave.