hudāhum
their guidance
N – genitive masculine noun + PRON – 3rd person masculine plural object pronoun Ha
Root Link: ه د ى
fa-inna
then indeed
REM – prefixed resumption particle fa + ACC – accusative particle inna
Root Link: ا ن ن
yuḍillu
He lets go astray
V – 3rd person masculine singular (form IV) imperfect verb
Root Link: ض ل ل
lahum
for them
P – prefixed preposition lām + PRON – 3rd person masculine plural personal pronoun hum
Root Link: ل