Which preposition to use with faste

by Occurrences 1%

Beneathe an holme, faste by a pathwaie side Which dide unto Seynete Godwine's covent lede, A hapless pilgrim moneynge dyd abide, Pore in his viewe, ungentle in his weede, Longe bretful of the miseries of neede; Where from the hailstone coulde the almer flie?

than Occurrences 1%

The thridde ryvere, that is clept Tigris, is as moche for to seye as faste rennynge: for he rennethe more faste than ony of the tother.

Which preposition to use with  faste