The celebrant drops 13 pieces of coins (silver or gold) called arras into the Groom's waiting hands, who in turn drops it into the Bride's hands. The Bride then puts her hand above the Groom's then drops the arras into his hands again. The Groom allows the coins to then be dropped into a plate held by an attendant.
The metal tinkling of the coins being passed from one pair of hands to the other, is a distinctive reminder of the groom's promise to take care of his wife materially. The bride in return, by giving back the coins to his hands, convey that what they both earn become part of each other's. The trickling sound also signifies abundance and success in the couple's joint efforts.