Jeremiah 32:11

So I took the deed of purchase, both that which was sealed according to the law and custom, and that which was open:

Luke 2:27

And he came by the Spirit into the temple: and when the parents brought in the child Jesus, to do for him according to the custom of the law,

Acts 26:3

Especially because I know you to be expert in all customs and questions which are among the Jews: therefore I beseech you to hear me patiently.

1 Corinthians 11:16

But if any man seem to be contentious, we have no such custom, neither the churches of God.

Treasury of Scripture Knowledge

Summary

So I took the evidence of the purchase, both that which was sealed according to the law and custom, and that which was open:

Bible References

According

Luke 2:27
And he came by the Spirit into the temple: and when the parents brought in the child Jesus, to do for him according to the custom of the law,
Acts 26:3
Especially because I know you to be expert in all customs and questions which are among the Jews: therefore I beseech you to hear me patiently.
1 Corinthians 11:16
But if any man seem to be contentious, we have no such custom, neither the churches of God.