Leviticus 1:14 gives the general law for bird offerings (turtledoves or pigeons), which the Nazirite offering follows exactly.

Leviticus 5:7-10 prescribes the same two-bird offering (one sin, one burnt) for the poor, identical to the Nazirite's purification.

Leviticus 14:22 prescribes the exact same offering for a poor leper: two turtledoves/pigeons, one sin, one burnt.

Leviticus 14:23 also specifies bringing the birds on the eighth day to the priest, matching the timing in the Nazirite's purification.

Leviticus 15:14 requires a man with discharge to bring two turtledoves/pigeons on the eighth day, same as the Nazirite.

Leviticus 15:29 prescribes the same two-bird offering for a woman with discharge — mirroring the Nazirite's purification.