Sayyidina Numan ibn Bashir (RA) reported that Allah’s Messenger (SAW) said, “The example of those who abide by the limits of Allah and those who do not observe them is like that of a people who cast lots to sail on a ship. Some of them take the upper deck and some the lower deck. Those in the sea in the lower deck would ascend (to the upper) to get water and (in the process) would drop water on those in the upper deck. So these people who were in the upper deck said, ‘We will not allow you to climb up for you hurt us.” So, those in the lower deck responded, “Well we shall bore a hole in the lower portion and fetch water from here.” Thus, if they hold their hands and prevent them then all of them will be saved, but if they leave them to themselves then all of them would drown.”
[Bukhari 2493, Muslim 1599]
--------------------------------------------------------------------------------