Narrated Abdullah ibn Masud (RA) : The Prophet ﷺ used to read the verse Is there any that will receive admonition (muddakir)? that is with doubling of consonant [ (dal) (d)]. Abu Dawud said: The word muddakir may be pronounced as mim (m) with a short vowel u. (dal) (d) with a short vowel and kaf (k) with a short vowel i.