يَتَجَرَّعُهُ
He will sip it unwillingly,
indicates that he will hate to drink this water, but he will be forced to sip it; he will refuse until the angel strikes him with an iron bar,
وَلَهُمْ مَّقَامِعُ مِنْ حَدِيدٍ
And for them are hooked rods of iron. (22;21)
Allah said next,
وَلَا يَكَادُ يُسِيغُهُ
and he will find great difficulty in swallowing it down his throat,
meaning, he will hate to swallow it because of its awful taste, color and unbearable heat or coldness,
وَيَأْتِيهِ الْمَوْتُ مِن كُلِّ مَكَانٍ
and death will come to him from every side,
his organs, limbs and entire body will suffer pain because of this drink.
Amr bin Maymun bin Mahran commented,
"Every bone, nerve and blood vessel."
Ad-Dahhak reported that Ibn Abbas commented on Allah's statement,
"All types of torment that Allah will punish him with on the Day of Resurrection in the fire of Jahannam will come to him carrying death, if he were to die. However, he will not die because Allah the Exalted said,
لَا يُقْضَى عَلَيْهِمْ فَيَمُوتُواْ وَلَا يُخَفَّفُ عَنْهُمْ مِّنْ عَذَابِهَا
Neither will it affect them that they die nor shall its torment be lightened for them." (35;36)
Therefore, according to Ibn Abbas, may Allah be pleased with him and his father, every type of punishment will come to him (the obstinate, rebellious tyrant) carrying death with it, if he will ever die there. Yet, he will not die, he will instead receive eternal punishment and torment.
Hence Allah's statement here,
وَيَأْتِيهِ الْمَوْتُ مِن كُلِّ مَكَانٍ
وَمَا هُوَ بِمَيِّتٍ
and death will come to him from every side, yet he will not die,
Allah said,
وَمِن وَرَايِهِ عَذَابٌ غَلِيظٌ
and in front of him, will be a great torment.
even in this condition, he will still suffer another severe type of torment, more severe and painful from the one before it, harsher more bitter.
Allah described the tree of Zaqqum,
إِنَّهَا شَجَرَةٌ تَخْرُجُ فِى أَصْلِ الْجَحِيمِ
طَلْعُهَا كَأَنَّهُ رُءُوسُ الشَّيَـطِينِ
فَإِنَّهُمْ لاّكِلُونَ مِنْهَا فَمَالِيُونَ مِنْهَا الْبُطُونَ
ثُمَّ إِنَّ لَهُمْ عَلَيْهَا لَشَوْباً مِنْ حَمِيمٍ
ثُمَّ إِنَّ مَرْجِعَهُمْ لاِلَى الْجَحِيمِ
Verily, it is a tree that springs out of the bottom of Hellfire, the shoots of its fruits stalks are like the heads of Shayatin; Truly, they will eat thereof and fill their bellies therewith.
Then on top of that they will be given boiling water to drink so that it becomes a mixture. Then thereafter, verily, their return is to the flaming fire of Hell. (37;64-68)
Allah states that they will either be eating from the Zaqqum, drinking the Hamim, or being tormented in the Fire, again and again; we seek refuge with Allah from all of this.
Allah also said,
هَـذِهِ جَهَنَّمُ الَّتِى يُكَذِّبُ بِهَا الْمُجْرِمُونَ
يَطُوفُونَ بَيْنَهَا وَبَيْنَ حَمِيمٍ ءَانٍ
This is the Hell which the criminals denied. They will go between it (Hell) and the fierce boiling water! (55;43-44)
إِنَّ شَجَرَةَ الزَّقُّومِ
طَعَامُ الاٌّثِيمِ
كَالْمُهْلِ يَغْلِى فِى الْبُطُونِ
كَغَلْىِ الْحَمِيمِ
خُذُوهُ فَاعْتِلُوهُ إِلَى سَوَاءِ الْجَحِيمِ
ثُمَّ صُبُّواْ فَوْقَ رَأْسِهِ مِنْ عَذَابِ الْحَمِيمِ
ذُقْ إِنَّكَ أَنتَ الْعَزِيزُ الْكَرِيمُ
إِنَّ هَـذَا مَا كُنتُمْ بِهِ تَمْتَرُونَ
Verily, the tree of Zaqqum will be the food of the sinners. Like boiling oil, it will boil in the bellies, like the boiling of scalding water.
(It will be said) "Seize him and drag him into the midst of blazing Fire, then pour over his head the torment of boiling water. Taste you (this)!
Verily, you were the mighty, the generous!
Verily, this is that whereof you used to doubt!" (44;43-50)
وَأَصْحَـبُ الشِّمَالِ مَأ أَصْحَـبُ الشِّمَالِ
فِى سَمُومٍ وَحَمِيمٍ
وَظِلٍّ مِّن يَحْمُومٍ
لااَّ بَارِدٍ وَلَا كَرِيمٍ
And those on the Left Hand - how (unfortunate) will be those on the Left Hand In fierce hot wind and boiling water, and shadow of black smoke, neither cool nor pleasant. (56;41-44)
and,
هَـذَا وَإِنَّ لِلطَّـغِينَ لَشَرَّ مَـَابٍ
جَهَنَّمَ يَصْلَوْنَهَا فَبِيْسَ الْمِهَادُ
هَـذَا فَلْيَذُوقُوهُ حَمِيمٌ وَغَسَّاقٌ
وَءَاخَرُ مِن شَكْلِهِ أَزْوَجٌ
This is so! And for the Taghun will be an evil final return. Hell! Where they will burn, and worst is that place to rest! This is so! Then let them taste it Hamim and Ghassaq. And other (torments) of similar kind all together! (38;55-58)
There are many other similar Ayat that indicate that the punishment they will receive is of different kinds, and that it is repeated in various types and forms that only Allah the Exalted knows, as just recompense,
وَمَا رَبُّكَ بِظَلَّـمٍ لِّلْعَبِيدِ
And your Lord is not at all unjust to (His) slaves. (41;46