Tafsir of Qaf 50:24

Both of you throw into Hell every stubborn disbeliever. It appears that Allah will say these words to the Sa'iq and Shahid angels; the Sa'iq drove him to the grounds where Reckoning is held and the Shahid testified. Allah the Exalted will order them to throw him in the fire of Jahannam, and worse it is as a destination,

ألقيا في جهنم كل كفار عنيد

Both of you throw into Hell every stubborn disbeliever. meaning, whose disbelief and denial of truth was horrendous, who used to stubbornly reject the truth, knowingly contradicting it with falsehood,