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adhālika
Is that
INTG – prefixed interrogative alif + DEM – masculine singular demonstrative pronoun
Root Link: ذ ل ك
khayrun
better
N – nominative masculine singular indefinite noun
Root Link: خ ى ر
nuzulan
(as) hospitality
N – accusative indefinite noun
Root Link: ن ز ل
am
or
CONJ – coordinating conjunction
Root Link: ا م
shajaratu
(the) tree
N – nominative 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