Hadith.1322 - Ibrahim ibn Maymun said to him (Abu Abdullah عليه السلام):
"We travel to Ahwaz in ships, and we combine the prayers on board."
He عليه السلام replied: "Yes, there is no harm in that."
He further asked: "And we prostrate on what is in the ship and on the pitch (tar)?"
Imam عليه السلام said: "There is no harm."
