Stones from religious sites whether ancient or modern should not be removed. Such is the prevalent , recorded at Fyvie Castle (near Turriff) and the Hill O’ many Stanes (Northern Highlands) among other places. C. G. Nash, in 1906, recorded that a stone taken from the circle at Grenish was once taken to be used as a lintel over the doorway of a byre, but when it was in place the cattle were afraid of entering. Consequently it was taken back to the circle and an ordinary slab used, which the cattle were happy to pass.
The Lore Of Scotland – A Guide To Scottish Legends
Westwood & Kingshill