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inna
Indeed
ACC – accusative particle inna
Root Link: ا ن ن
shajarata
(the) tree
N – accusative feminine noun
Root Link: ش ج ر
l-zaqūmi
(of) Zaqqum
DET – determiner prefix al + PN – genitive masculine proper noun 
Root Link: ز ق م

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