Which two Sacraments' origins do we honor and celebrate on Holy Thursday?

Maundy Thursday

Explanation:

The two Sacraments' origins we do honor and celebrate on Holy Thursday is the Maundy Thursday.

Maundy Thursday (which is also called Holy Thursday, Covenant Thursday, Sheer Thursday and Thursday of Mysteries, among several other known names) is the Christian hold day which falls on a Thursday before Easter. The day is observed to celebrate the washing of the feet and also the last supper of Jesus Christ which he had with the Apostles.

Maundy Thursday is also known as Holy Thursday. It falls on the Thursday before Easter.

The word Maundy was derived from the Latin word which means command. This refers Jesus commandment to his disciples to Love one another as he had loved them.

Maundy Thursday celebrates Jesus Christ's institution of the Eucharist during the Last Supper which is described in the Christian bible