The word(s) "sum" appears 16 time(s) in 15 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) Say to the desert Arabs who lagged behind: "Ye shall be summoned (to fight) against a people given to vehement war: then shall ye fight, or they shall submit. Then if ye show obedience, Allah will grant you a goodly reward, but if ye turn back as ye did before, He will punish you with a grievous Penalty."

(12) Is it that ye are afraid of spending sums in charity before your private consultation (with him)? If, then, ye do not so, and Allah forgives you, then (at least) establish regular prayer; practise regular charity; and obey Allah and His Messenger. And Allah is well-acquainted with all that ye do.

(13) The Day that the shin shall be laid bare, and they shall be summoned to bow in adoration, but they shall not be able,-

(14) Their eyes will be cast down,- ignominy will cover them; seeing that they had been summoned aforetime to bow in adoration, while they were whole, (and had refused).

(15) Their covenants (covering) journeys by winter and summer,-