Feast of the Seven Sorrows of Our Blessed Lady

The Collect of the Feast,

O God, at Whose suffering the prophecy of Simeon was fulfilled, and a sword of sorrow pierced through the gentle soul of the glorious Virgin and Mother Mary, mercifully grant that we who speak worshipfully of her woes, may obtain the saving purchase of thy suffering.Who livest and reignest with God the Father in the unity of the Holy Spirit, one God, world without end.R. Amen

The Hymn of the Feast from Matins,
 What a sea of tears and sorrow
Did the soul of Mary toss
To and fro upon its billows,
While she wept her bitter loss;
In her arms her Jesus holding,
Torn so newly from the cross.

Oh, that mournful Virgin-Mother!
See her tears how fast they flow
Down upon his mangled body,
Wounded side, and thorny brow;
While his hands and feet she kisses—
Picture of immortal woe.

Oft and oft his arms and bosom
Fondly straining to her own;
Oft her pallid lips imprinting
On each wound of her dear Son;
Till at last, in swoons of anguish,
Sense and consciousness are gone.

Gentle Mother, we beseech thee
By thy tears and troubles sore;
By the death of thy dear offspring,
By the bloody wounds he bore;
Touch our hearts with that true sorrow
Which afflicted thee of yore.

To the Father everlasting,
And the Son who reigns on high,
With the co-eternal Spirit,
Trinity in Unity,
Be salvation, honour, blessing
Now and through eternity.
Amen.

And here is a link to a pamphlet (a .pdf in MS Word) containing the history, promises, and prayers, of the Rosary of the Seven Sorrows of Our Lady.