Both like in hue and hair,
As men said that there were:
No man saw never none sich;
That one was a mare iliche,
That other a colt, a noble steed,
Where that he were in any mead,
(Were the knight never so bold.)
When the mare neigh wold,
(That him should hold against his will,)
But soon he woulde go her till,
And kneel down and suck his dame,
Therewith the Soldan with shame
Shoulde king Richard quell,
All this an angel 'gan him tell,
That to him came about midnight.
'Awake,' he said, 'Goddis knight:
My Lord doth thee to understand
That thee shalt come an horse to land,
Fair it is, of body ypight,
To betray thee if the Soldan might;
On him to ride have thou no drede
For he thee helpe shall at need.'

The angel gives king Richard several directions about managing this
infernal horse, and a general engagement ensuing, between the Christian
and Saracen armies,

He leapt on horse when it was light;
Ere he in his saddle did leap
Of many thinges he took keep.--