Reference for Chullin 244:39

אמר רב ששת בריה דרב אידי

for prayer,<span class="x" onmousemove="('comment',' A person who is on the way and wishes to rest for the night, and knows of a Synagogue not more than four mils away, must continue his journey till he reaches that Synagogue in order to pray there.');">²²</span>

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