Translation of the verse 16 from Surah Al-Fath : Number of verses 29 - - page 513 - Part 26.
Say (O Muhammad SAW) to the bedouins who lagged behind: "You shall be called to fight against a people given to great warfare, then you shall fight them, or they shall surrender. Then if you obey, Allah will give you a fair reward, but if you turn away as you did turn away before, He will punish you with a painful torment."
Say to those who remained behind of the bedouins, "You will be called to [face] a people of great military might; you may fight them, or they will submit. So if you obey, Allah will give you a good reward; but if you turn away as you turned away before, He will punish you with a painful punishment."
(48:16) Say to the bedouins who were left behind: 'You will be called against those who possess great might and be asked to fight against them unless they surrender. *30 If you obey (the command to fight), Allah will bestow upon you a goodly reward. But if you turn away, as you turned away before, He shall inflict upon you a grievous chastisement.'
*30) The words au yuslimun in the original can have two meanings and both are implied: (1) 'That they should accept Islam"; and (2) 'that they should submit to the Islamic rule."