... As if they were uprooted stems of date-palms. Then, how (terrible) was My Torment and My Warnings? (V.54: 20, 21)

Hadith Number 4871

setting

Narrated Abu 'Is-haq

A man asked Al-Aswad, 'is it 'Fahal min-Muddakir' or'..Mudhdhakir?" Al Aswad replied, 'I have heard `Abdullah bin Masud reciting it, 'Fahal-min Muddakir'; I too, heard the Prophet (ﷺ) reciting it 'Fahal-min-Muddakir' with 'd'.