Musnad Abu Ya'la al-Mawsili 165:10

Jabara narrated to us, Yahya bin al-Ala narrated to us, from Marwan bin Salim, from Talha bin Ubaydullah, from al-Husayn bin Ali, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The security of my nation from drowning when they board [a ship] is to say: 'In the name of Allah, its course and its anchorage. Indeed, my Lord is Forgiving, Merciful,' and 'They have not appraised Allah with true appraisal' [to the end of the verse]."