Arras and lazo

In Paul Turner's Blog by Paul Turner

Q:  What can you tell me about the origins of the hispanic/filipino marriage customs of the arras and lazo, now available in English in the US?
A:  John Chrysostom mentions the arras, but he’s referring to a betrothal ring. The 8th to 11th c. Mozarabic Liber ordinum has a prayer concerning the exchange of arras (pledges), and that’s probably the source that led to the present-day custom.
The lazo can be traced at least to the same source, possibly earlier.
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