Al-Kāfi - The Book of Prayer

Chapter: Salah (Prayer) on a Ship َّدٍ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَبِي هَاشِ٠ٍ الْجَعْفَرِيِّ قَالَ كُنْتُ ٠َعَ أَبِي الْحَسَنِ (عَلَيْهِ الْسَّلا٠) فِي السَّفِينَةِ فِي دِجْلَةَ فَحَضَرَتِ الصَّلاَةُ فَقُلْتُ جُعِلْتُ فِدَاكَ نُصَلِّي فِي جَ٠َاعَةٍ قَالَ فَقَالَ لاَ تُصَلِّ فِي بَطْنِ وَادٍ جَ٠5.

Ali ibn Muhammad has narrated from Sahl ibn Ziyad from abu Hashim al-Ja‘fariy who has said the following: “One abu al-Hassan (a.s.), and I were in a ship on the Tigris. It became time for Salah (prayer) and I said, ‘I pray to Allah to keep my soul in service for your cause, can we perform Salah (prayer) in congregation?

He (the Imam) said, ‘No, we perform Salah (prayer) in the valley in congregation.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/396))