Ahmed (foot) agreed Wednesday with the Dolphins on a one-year contract, Aaron Wilson of KPRC 2 Houston reports.
Miami placed Ahmed (foot) on its injured reserve list Tuesday, Barry Jackson of the Miami Herald reports.
Ahmed carried the ball three times for six yards during Sunday's 20-13 win over Las Vegas. He also secured all three of his targets for 25 yards and one touchdown.
Ahmed carried the ball three times for four yards during Sunday's 21-14 loss to the Chiefs. He also secured two of three targets for eight yards.
Ahmed carried the ball twice for three yards during Sunday's 31-17 loss to the Eagles. He secured one of two targets but did not compile any receiving yardage.
Ahmed carried the ball six times for 23 yards and one touchdown during Sunday's 42-21 win over Carolina.
Ahmed (coach's decision) is inactive for Sunday's game against the Giants.
Ahmed did not handle a carry during Sunday's 48-20 loss to the Bills.
Ahmed (groin) is listed as active for Sunday's game against the Bills.
Ahmed (groin) is listed as questionable for Sunday's game against the Bills, Travis Wingfield of the Dolphins' official site reports.