✅Answer: Pay attention to the following narrations:

1 عَنْ مُحَمَّدِ بْنِ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ سَمَاعَةَ عَنْ أَبِي عَبْدِ اللَّهِ فِي حَدِيثٍ قَالَ: وَ غُسْلُ الْمَيِّتِ وَاجِبٌ.

📚 Al-Kafi, vol. 3, p. 40

Imam Sadiq (peace be upon him) said in a hadith: Washing the dead is obligatory.

2 عَنْ مُحَمَّدِ بْنِ يَحْيَى عَنْ مُحَمَّدِ بْنِ أَحْمَدَ بْنِ يَحْيَى عَنْ مُوسَى بْنِ جَعْفَرٍ عَنْ عَلِيِّ بْنِ مَعْبَدٍ عَنْ عُبَيْدِ اللَّهِ الدِّهْقَانِ عَنْ أَبِي خَالِدٍ قَالَ: قَالَ: إِغْسِلْ كُلَّ الْمَوْتَى الْغَرِيقَ وَ أَكِيلَ السَّبُعِ وَ كُلَّ شَيْ ءٍ إِلَّا مَا قُتِلَ بَيْنَ الصَّفَّيْنِ الْحَدِيثَ.

📚 Al-Tahdhib, vol. 1, p. 330

Abi Khalid said: (The Imam, peace be upon him) said: Wash all the dead: the drowned, the one torn apart by beasts, and any other, except for the martyr who is killed between the two lines (in battle).

3 عَنْ غَزْوَانَ السَّكُونِيِّ عَنْ جَعْفَرٍ عَنْ أَبِيهِ عَنْ آبَائِهِ قَالَ: قَالَ رَسُولُ اللَّهِ صَلُّوا عَلَى الْمَرْجُومِ مِنْ أُمَّتِي وَ عَلَى الْقَتَّالِ نَفْسَهُ مِنْ أُمَّتِي لَا تَدَعُوا أَحَداً مِنْ أُمَّتِي بِلَا صَلَاةٍ.

📚 Al-Tahdhib, vol. 3, p. 328

Imam Sadiq (peace be upon him) narrated from his fathers from the Messenger of Allah (peace and blessings be upon him and his family) who said: Pray over the stoned one from my nation and over the one who commits suicide from my nation, and do not leave anyone from my nation without a prayer!

4 عَنْ طَلْحَةَ بْنِ زَيْدٍ عَنْ أَبِي عَبْدِ اللَّه عَنْ أَبِيهِ قَالَ: صَلِّ عَلَى مَنْ مَاتَ مِنْ أَهْلِ الْقِبْلَةِ وَ حِسَابُهُ عَلَى اللَّهِ.

📚 Al-Tahdhib, vol. 3, p. 328

Imam Baqir (peace be upon him) said: Pray over anyone who dies from the people of the Qibla, and their reckoning is with Allah!

5 عَنْ هِشَامِ بْنِ سَالِمٍ عَنْ أَبِي عَبْدِ اللَّه قَالَ: قُلْتُ لَهُ شَارِبُ الْخَمْرِ وَ الزَّانِي وَ السَّارِقُ يُصَلَّى عَلَيْهِمْ إِذَا مَاتُوا فَقَالَ نَعَمْ.

📚 Al-Tahdhib, vol. 3, p. 328

Hisham ibn Salim said: I asked Imam Sadiq (peace be upon him): When a wine-drinker, fornicator, or thief dies, is the funeral prayer performed over them? He said: Yes!

6 عَنْ يُونُسَ عَنْ بَعْضِ رِجَالِهِ عَنْ أَبِي عَبْدِ اللَّهِ و أَبِي جَعْفَرٍ قَالَ: الْكَفَنُ فَرِيضَةً لِلرِّجَالِ ثَلَاثَةُ أَثْوَابٍ وَ الْعِمَامَةُ وَ الْخِرْقَةُ سُنَّةٌ وَ أَمَّا النِّسَاءُ فَفَرِيضَتُهُ خَمْسَةُ أَثْوَابٍ.

📚 Al-Tahdhib, vol. 1, p. 291

Imam Baqir and Imam Sadiq (peace be upon them both) said: The shroud (kafan) of three pieces is obligatory for men, and the turban and loincloth are recommended, but for women the obligatory shroud is five pieces!

✅ According to numerous narrations, of which a few have been mentioned, preparing the deceased Muslim—meaning washing, shrouding, and burying with specific rulings and etiquettes—is obligatory.

Although there are exceptions in some cases of washing, shrouding, and burial in specific manners, in the narrations the death of a person due to a contagious disease has not been mentioned as an allowance to abandon washing, shrouding, and burial. It is necessary that these deceased also receive their proper Islamic washing, shrouding, and burial!

✅ Interestingly, in the narrations one of the disliked professions is declared to be the selling of shrouds, and Imam Sadiq (peace be upon him) explained the reason:

فَإِنَّ صَاحِبَ الْأَكْفَانِ يَسُرُّهُ الْوَبَاءُ

Because the shroud seller becomes pleased at the occurrence of plague!

📚 Al-Kafi, vol. 5, p. 114

✅ It is clear that in those times, by the ruling of Islam, even though they considered plague to be contagious, they still shrouded the dead. But today.....??!

Washing, shrouding, and burial of one who dies from a contagious disease

Funeral prayer

اللَّهُمَّ صَلِّ عَلَی مُحَمَّدٍ وَ آلِ مُحَمَّدٍ

وَ عَجِّلْ لِوَلِیِّکَ الْفَرَجَ وَ الْعَافِیَةَ وَ النَّصْرَ