The word(s) "sum" appears 37 time(s) in 36 verse(s) in Quran in Muhammad Pickthal translation.

(11) Say: Cry unto those (saints and angels) whom ye assume (to be gods) beside Him, yet they have no power to rid you of misfortune nor to change.

(12) On the day when We shall summon all men with their record, whoso is given his book in his right hand - such will read their book and they will not be wronged a shred.

(13) And had chosen seclusion from them. Then We sent unto her Our Spirit and it assumed for her the likeness of a perfect man.

(14) So make no haste against them (O Muhammad). We do but number unto them a sum (of days).

(15) On that day they follow the summoner who deceiveth not, and voices are hushed for the Beneficent, and thou hearest but a faint murmur.

(16) Unto each nation have We given sacred rites which they are to perform; so let them not dispute with thee of the matter, but summon thou unto thy Lord. Lo! thou indeed followest right guidance.

(17) And lo! thou summonest them indeed unto a straight path.

(18) They said: Put him off, (him) and his brother, and send into the cities summoners

(19) Then Pharaoh sent into the cities summoners,

(20) And as a summoner unto Allah by His permission, and as a lamp that giveth light.