Genesis 31:35

And she said to her father, Be not indignant, Sir; I cannot rise up before thee, for it is with me according to the manner of women. Laban searched in all the house, and found not the images.

And she said to her father, Let it not displease my lord that I cannot rise up before thee; for the custom of women is upon me. And he searched, but found not the images.

She said to her father, “Don’t let my lord be angry that I can’t rise up before you; for I’m having my period.” He searched, but didn’t find the teraphim.