Related for Chullin 271:22
אמר רב ביבי בר אביי
What then is the significance of 'thy roof'? - It excludes the roofs of Synagogues and Houses of Study.<span class="x" onmousemove="('comment',' For the verse implies the roof of a house used as a dwelling but not the roof of any other building.');"><sup>18</sup></span>
Tosefta Terumot
We do not take terumah from produce [that is harvested] before it is one-third ripe (cf. Hallah 1:3). How do you know if it is one-third ripe or if not? If it is planted and something has sprouted, it is known that it one-third ripe. If it is planted and something has not sprouted, it is known that it is not one-third ripe.
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