Musannaf Ibn Abi Shaybah

Hazrat Humaid narrates that Hazrat Anas bin Malik (may Allah be pleased with him) was asked about performing prayer on a boat. The freed slave of Hazrat Anas, Abdullah bin Abi Utbah, who was sitting with us, said that he had traveled with Hazrat Abu Saeed Khudri, Hazrat Abu Darda, and Hazrat Jabir bin Abdullah (may Allah be pleased with them) (Humaid says that he also mentioned some other people). Our imam would lead us in prayer standing on the boat, and we would pray standing behind him. Sometimes, if the boat was near the shore, we would disembark and perform the prayer on the shore.