Shemot 35:3 – Prohibition of Melachah on Shabbat
Exodus 35:3
The Torah's command not to perform melachah on Shabbat is the foundational verse from which all Shabbat labor prohibitions derive, including the prohibitions of tying (qosher) and building (boneh) relevant to the use of safety pins.
לֹא־תְבַעֲר֣וּ אֵ֔שׁ בְּכֹ֖ל מֹשְׁבֹֽתֵיכֶ֑ם בְּי֖וֹם הַשַּׁבָּֽת׃ {פ}
You shall kindle no fire throughout your settlements on the sabbath day.