اتسعوا

They became nine: (S, K:) and they became ninety. (M and L in article ثلث.)

They were, or became, persons whose camels came to water [on the ninth day, counting the day of the next preceding watering as the first; i. e.,] after an interval of nine days, [of which the first or last, or each of these, was not complete,] and eight nights. (S, * K, * TA.)