Deuteronomy 16:10

feast Heb. ḥag, as in Rabbinic Hebrew a pilgrim-feast, and in Ar. pilgrimage(perhaps originally a sacred dance, Wellh. Reste d. Arab. Heiden. iii. 106, 165, and Exodus 32:5 f.; cp. the vb ḥagag, Psalms 42:5; Psalms 107:27). So E, Exodus 23:14, and frequently in O.T. of the three pilgrim feasts. See Driver's Exod.242.

with a tribute of a free-will offering, etc.] Heb. (according to) the sufficiency of the free-will offering, etc.; i.e. with a gift (see on Deuteronomy 12:6) adequate to the competence of the offerer, as he has been blessed by God.