On Miscellaneous Topics
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 28
وَقَالَ عَلَيْهِ اَلسَّلاَمُ: «إِذَا مَاتَ لِأَحَدِكُمْ مَيِّتٌ فَسَجُّوهُ تُجَاهَ اَلْقِبْلَةِ وَ كَذَلِكَ إِذَا غُسِّلَ يُحْفَرُ لَهُ مَوْضِعُ اَلْمُغْتَسَلِ تُجَاهَ اَلْقِبْلَةِ.
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "When one of you dies, lay him down facing the Qibla, and likewise, when he is washed, let the place of washing be dug facing the Qibla."
- Ṣaḥīḥ al-Faqīh