Answer:
(Fatwa: 60/61=L/1429)
Zuad (ض) should be pronounced with its original pronunciation, it is not right to pronounce it like dal (د); therefore the Mufti Sahib is wrong who says it should be recited duallin instead of zuallin.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
