Allah says,

﴿وَإِذَا الْبِحَارُ سُجِّرَتْ ﴾

(And when the seas become as blazing fire.) Ibn Jarir recorded from Sa`id bin Al-Musayyib that `Ali said to a Jewish man, "Where is the Hell'' The man said, "The sea.'' `Ali then said, "I think he is truthful, as Allah says

﴿وَالْبَحْرِ الْمَسْجُورِ ﴾

(And by the seas kindled (Masjur).) (52:6) and;

﴿وَإِذَا الْبِحَارُ سُجِّرَتْ ﴾

(And when the seas become as blazing fire.)'' This has already been discussed previously with the explanation of Allah's statement,

﴿وَالْبَحْرِ الْمَسْجُورِ ﴾

(And by the seas kindled (Masjur).) (52:6)