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falā
And not
CONJ – prefixed conjunction fa (and) + NEG – negative particle
Root Link: ل ا
taʿlamu
knows
V – 3rd person feminine singular imperfect verb
Root Link: ع ل م
nafsun
a soul
N – nominative feminine singular indefinite noun
Root Link: ن ف س
what
REL – relative pronoun
Root Link: م ا
ukh'fiya
is hidden
V – 3rd person masculine singular (form IV) passive perfect verb
Root Link: خ ف ى
lahum
for them
P – prefixed preposition lām + PRON – 3rd person masculine plural personal pronoun hum
Root Link: ل
min
of
P – preposition
Root Link: م ن
qurrati
(the) comfort
N – genitive feminine noun 
Root Link: ق ر ر
aʿyunin
(for) the eyes
N – genitive feminine plural indefinite noun
Root Link: ع ى ن
jazāan
(as) a reward
N – accusative masculine indefinite noun
Root Link: ج ز ى
bimā
for what
P – prefixed preposition bi + REL – relative pronoun
Root Link: ب م ا
kānū
they used (to)
V – 3rd person masculine plural perfect verb + PRON – subject pronoun waw
Root Link: ك و ن
yaʿmalūna
do
V – 3rd person masculine plural imperfect verb + PRON – subject pronoun na
Root Link: ع م ل

Acknowledgements:

Single-Word Audio has been made possible through software provided by Arabic NLP

James Ada's concordance work; his research can be found at www.organizedQuran.com
Note: James is now a member of the IslamAwakened Continuity Board