The Jewish Babylonian Talmud – Section Moed – Tract Sabbath – Regulations regarding the clearing off of required space, the assistance to be given cattle when giving birth and to women about to be confined.
p. 276 CHAPTER XVIII. REGULATIONS REGARDING THE CLEARING OFF OF REQUIRED SPACE, THE ASSISTANCE TO BE GIVEN CATTLE WHEN GIVING BIRTH TO THEIR YOUNG AND TO WOMEN ABOUT TO BE CONFINED. MISHNA: One may even clear off four or five chests of straw or grain, in order to provide room for guests, and to remove obstacles to instruction;