Deuteronomy 24:9

Remember what the Lord thy God did unto Miriam by the way, after that ye were come forth out of Egypt.

Cross-references

Numbers 12:10-15 recounts Miriam's leprosy and isolation, the exact event Deuteronomy 24:9 commands to remember.

Numbers 12:15 records Miriam being shut out of camp for seven days, the very event Deuteronomy 24:9 commands Israel to remember as a warning against leprosy.