Leviticus 13:26

But if the priest look on it, and, behold, there be no white hair in the bright spot, and it be no lower than the other skin, but be somewhat dark; then the priest shall shut him up seven days:

Cross-reference

Leviticus 13:4 provides the same seven-day quarantine for a white spot not deeper than skin — a parallel diagnostic step to the deeper spot described here.

Leviticus 13:5 continues the quarantine procedure — if unchanged after seven days, another seven days are added, extending the process begun here.

Leviticus 13:23 describes a spot that remains without spreading — declared clean as a scar, contrasting with the suspicious deeper spot needing quarantine here.