Áþ-swaring

According to the Old English Dictionary:

-swerung, e;

áþ-swaring

f. An oath-swearing; juramentum :-- Gemindig wæs áþswaringe his memor fuit juramenti sui, Ps. Spl. 104, 8. Mid áþswerunge with oath-swearing, Chr.1070; Th. 344, 27. aþ-swaring