Hafiz soon
As-Saffat · 37:170

But they disbelieved in it, so they are going to know.

Sahih International

Word 1 of 4

فَكَفَرُوا۟

fakafarū

But they disbelieved

Word breakdown

ف

Harf · Resumption particle

then

كفرُ

Fi'l · Verb

But they disbelieved

Rootكفرkfr

to disbelieve, reject faith; disbelief, ingratitude

525× in the Quran · Very common

LemmaكَفَرَVerb (form I) - to disbelieve

وا

Ism · Personal pronoun

them/their

Grammar rules

Past tense verb

فَكَفَرُوا۟ (But they disbelieved) is a past tense verb — the action already happened and is complete.

We translate it in past tense — "did", "created", "said", etc.

Lesson 8 · Verbs — Past & Present