Muwatta Imam Malik Book of Jihad, Hadith 33

Yahya related to me from Malik that Yahya ibn Said said, "The Messenger of Allah ﷺ was sitting by a grave which was being dug at Madina. A man looked into the grave and said, 'An awful bed for the mumin. 'The Messenger of Allah, may Allah blesshim and grant him peace, said, 'Evil? What you have said is absolutely wrong.'
The man said, 'I didn't mean that, Messenger of Allah. I meant being killed in the way of Allah.' The Messenger of Allah ﷺ said, 'Being killed in the way of Allah has no like! There is no place on the earth which I would prefer my grave to be than here (meaning Madina). He repeated it three times.' "

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، قَالَ كَانَ رَسُولُ اللَّهِ ﷺ جَالِسًا وَقَبْرٌ يُحْفَرُ بِالْمَدِينَةِ فَاطَّلَعَ رَجُلٌ فِي الْقَبْرِ فَقَالَ بِئْسَ مَضْجَعُ الْمُؤْمِنِ . فَقَالَ رَسُولُ اللَّهِ ﷺ " بِئْسَ مَا قُلْتَ " . فَقَالَ الرَّجُلُ إِنِّي لَمْ أُرِدْ هَذَا يَا رَسُولَ اللَّهِ إِنَّمَا أَرَدْتُ الْقَتْلَ فِي سَبِيلِ اللَّهِ . فَقَالَ رَسُولُ اللَّهِ ﷺ " لاَ مِثْلَ لِلْقَتْلِ فِي سَبِيلِ اللَّهِ مَا عَلَى الأَرْضِ بُقْعَةٌ هِيَ أَحَبُّ إِلَىَّ أَنْ يَكُونَ قَبْرِي بِهَا مِنْهَا " . ثَلاَثَ مَرَّاتٍ يَعْنِي الْمَدِينَةَ .