ثُمَّ إِنَّ مَرْجِعَهُمْ لَإِلَى ٱلْجَحِيمِ Qur’an As-Saffat (37:68)Thumma inna marjiAAahum lail a alja h eem i
See surah {6}, note [31].
When they eat of the zaqqum in the lowest depths of hell, they are apparently brought up to drink of the mixture as a further punishment, after which they go back to repeat the round.