Psalms 78:51 Halakhah

וַיַּ֣ךְ כָּל־בְּכ֣וֹר בְּמִצְרָ֑יִם רֵאשִׁ֥ית א֝וֹנִ֗ים בְּאָהֳלֵי־חָֽם׃

And smote all the first-born in Egypt, The first-fruits of their strength in the tents of Ham;