The Messenger of Allah ﷺ said, "A military campaign at sea is equal to ten campaigns on land, and the one who suffers seasickness at sea is like the one writhing in his own blood in the path of Allah, glorified is He."
حدثنا هشام بن عمار حدثنا بقية عن معاوية بن يحيى عن ليث بن أبي سليم عن يحيى بن عباد عن أم الدرداء
أن رسول الله ﷺ قال غزوة في البحر مثل عشر غزوات في البر والذي يسدر في البحر كالمتشحط في دمه في سبيل الله سبحانه
No references are available.
[Its chain of transmission is daif] Busiri said, This is a daif chain of transmission due to the weakness of Muawiya bin Yahya, mentioned previously, h: 842, and his teacher Layth bin Abu Salim, h: 208, and see h: 551 regarding the status of Baqiyyah.