Abdullah bin Abbas reported,

Umar used to say something of this sort, then he related the following.He said, I set out with Umar from Mecca, and when we reached al-Bayda, he suddenly noticed a group of riders resting under the shade of an acacia tree. He said, "Go and see who these riders are."I looked and found it was Suhayb, so I informed him. He said, "Call him for me."I went back to Suhayb and said, "Set off and catch up with the Commander of the Believers."When Umar was struck down, Suhayb came in weeping, saying, "Alas, my brother! Alas, my companion!"Umar said, "Suhayb, are you weeping for me, when the Messenger of Allah ﷺ said, 'The deceased is punished for some of his family's weeping over him'?"

فقال

ابن عباس رضي الله عنهما

قد كان عمر رضي الله عنه يقول بعض ذلك ثم حدث قال صدرت مع عمر رضي الله عنه من مكة حتى إذا كنا بالبيداء إذا هو بركب تحت ظل سمرة فقال اذهب فانظر من هؤلاء الركب قال فنظرت فإذا صهيب فأخبرته فقال ادعه لي فرجعت إلى صهيب فقلت ارتحل فالحق أمير المؤمنين فلما أصيب عمر دخل صهيب يبكي يقول وا أخاه وا صاحباه فقال عمر رضي الله عنه يا صهيب أتبكي علي وقد قال رسول الله ﷺ إن الميت يعذب ببعض بكاء أهله عليه