[Machine] The Messenger of Allah ﷺ said: "May Allah curse the Jews; they made the graves of their Prophets places of worship."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ قَاتَلَ اللهُ الْيَهُودَ اتَّخَذُوا قُبُورَ أَنْبِيَائِهِمْ مَسَاجِدَ  

When the last moment of the life of Messenger of Allah ﷺ came he started putting his 'Khamisa' on his face and when he felt hot and short of breath he took it off his face and said, "May Allah curse the Jews and Christians for they built the places of worship at the graves of their Prophets." The Prophet ﷺ was warning (Muslims) of what those had done. (Using translation from Bukhārī 435)   

وَعَبْدَ اللهِ بْنَ عَبَّاسٍ ؓ قَالَا لَمَّا نَزَلَ بِرَسُولِ اللهِ ﷺ طَفِقَ يَطْرَحُ خَمِيصَةً لَهُ عَلَى وَجْهِهِ فَإِذَا اغْتَمَّ بِهَا كَشَفَهَا عَنْ وَجْهِهِ ثُمَّ قَالَ وَهُوَ كَذَلِكَ لَعْنَةُ اللهِ عَلَى الْيَهُودِ وَالنَّصَارَى اتَّخَذُوا قُبُورَ أَنْبِيَائِهِمْ مَسَاجِدَ يُحَذِّرُ مِثْلَ مَا صَنَعُوا  

When the Prophet ﷺ became ill, some of his wives talked about a church which they had seen in Ethiopia and it was called Mariya. Um Salma and Um Habiba had been to Ethiopia, and both of them narrated its (the Church's) beauty and the pictures it contained. The Prophet ﷺ raised his head and said, "Those are the people who, whenever a pious man dies amongst them, make a place of worship at his grave and then they make those pictures in it. Those are the worst creatures in the Sight of Allah." (Using translation from Bukhārī 1341)   

كَانَ مَرِضَ رَسُولُ اللهِ ﷺ تَذَاكَرَ بَعْضُ نِسَائِهِ كَنِيسَةً بِأَرْضِ الْحَبَشَةِ يُقَالُ لَهَا مَارِيَةُ وَقَدْ كَانَتْ أُمُّ سَلَمَةَ وَأُمُّ حَبِيبَةَ ؓ قَدْ أَتَتَا أَرْضَ الْحَبَشَةِ فَذَكَرْنَ مِنْ حُسْنِهَا وَتَصَاوِيرِهَا قَالَتْ فَقَالَ النَّبِيُّ ﷺ إِنَّ أُولَئِكَ إِذَا كَانَ فِيهِمُ الرَّجُلُ الصَّالِحُ بَنَوْا عَلَى قَبْرِهِ مَسْجِدًا ثُمَّ صَوَّرُوا فِيهِ تِلْكَ الصُّوَرَ أُولَئِكَ شِرَارُ الْخَلْقِ عِنْدَ اللهِ