Chapter on Instructing the Dying (Talqin al-Muhtadarin)
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 23
فَأَمَّا مَا رَوَاهُ عَلِيُّ بْنُ اَلْحُسَيْنِ عَنْ عَلِيِّ بْنِ مُوسَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ اَلْحُسَيْنِ قَالَ: كَتَبْتُ إِلَيْهِ أَسْأَلُهُ عَنْ سَرِيرِ اَلْمَيِّتِ يُحْمَلُ أَ لَهُ جَانِبٌ يُبْدَأُ بِهِ فِي اَلْحَمْلِ مِنْ جَوَانِبِهِ اَلْأَرْبَعِ أَوْ مَا خَفَّ عَلَى اَلرَّجُلِ يَحْمِلُ مِنْ أَيِّ اَلْجَوَانِبِ شَاءَ فَكَتَبَ« مِنْ أَيِّهَا شَاءَ».
As for what was narrated by Ali ibn al-Husayn, from Ali ibn Musa, from Ahmad ibn Muhammad, from al-Husayn, he said:
I (Narrator) wrote to Imam عليه السلام asking about the bier of the deceased - whether it has a specific side from which to start carrying it among its four sides, or whether one may carry it from any side that is convenient. Imam عليه السلام wrote back: 'From whichever side he wishes.'"
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 481
- Ṣaḥīḥ al-Tahdhīb, p. 128