Anas bin Malik reported,

Whenever the Messenger of Allah ﷺ went to Quba, he would visit Umm Haram bint Milhan, and she would feed him. She was married to Ubada bin Samit.One day he came in and she fed him, then the Messenger of Allah ﷺ fell asleep. Soon he woke up laughing.She said, "I asked, 'What makes you laugh, Messenger of Allah?'"He replied, "Some people of my community were shown to me, going forth as warriors in the path of Allah, riding the midst of this sea like kings upon thrones," or he said, "like kings upon thrones." Ishaq was uncertain which.She said, "I said, 'Pray to Allah that He make me one of them.'"So he prayed for her, then he laid his head down and slept. Then he woke up laughing again.She said, "I asked, 'What makes you laugh, Messenger of Allah?'"He answered, "Some people of my community were shown to me, going forth as warriors in the path of Allah, riding the midst of this sea like kings upon thrones," or, "like kings upon thrones."She said, "I said, 'Pray to Allah that He make me one of them.'"He said, "You are among the first."She set sail upon the sea during the time of Muawiya, and when she came out of the sea she was thrown from her mount and died.

Bukhari 6282-6283

Sahih

حدثنا إسماعيل قال حدثني مالك عن إسحاق بن عبد الله بن أبي طلحة

عن أنس بن مالك رضي الله عنه أنه سمعه يقول

كان رسول الله ﷺ إذا ذهب إلى قباء يدخل على أم حرام بنت ملحان فتطعمه وكانت تحت عبادة بن الصامت فدخل يوما فأطعمته فنام رسول الله ﷺ ثم استيقظ يضحك قالت فقلت ما يضحكك يا رسول الله فقال ناس من أمتي عرضوا علي غزاة في سبيل الله يركبون ثبج هذا البحر ملوكا على الأسرة أو قال مثل الملوك على الأسرة شك إسحاق قلت ادع الله أن يجعلني منهم فدعا ثم وضع رأسه فنام ثم استيقظ يضحك فقلت ما يضحكك يا رسول الله قال ناس من أمتي عرضوا علي غزاة في سبيل الله يركبون ثبج هذا البحر ملوكا على الأسرة أو مثل الملوك على الأسرة فقلت ادع الله أن يجعلني منهم قال أنت من الأولين فركبت البحر زمان معاوية فصرعت عن دابتها حين خرجت من البحر فهلكت

البخاري 6282-6283صحيح
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Sahih Bukhari
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Darussalam 6282-6283
Bukhari6282 6282-6283