We said to 'Ali b. Abi Talib: Inform us about something which Messenger of Allah ﷺ told you in secret, whereupon he said: He told me nothing in secret which he bid from people, but I heard him say: Allah cursed him who sacrificed for anyone besides Allah; and cursed him who accommodated an innovator; and Allah cursed him who cursed his parents and Allah cursed him who changed the boundary lines (of the land possessed by him).  

أَخْبِرْنَا بِشَىْءٍ أَسَرَّهُ إِلَيْكَ رَسُولُ اللَّهِ ﷺ فَقَالَ مَا أَسَرَّ إِلَىَّ شَيْئًا كَتَمَهُ النَّاسَ وَلَكِنِّي سَمِعْتُهُ يَقُولُ لَعَنَ اللَّهُ مَنْ ذَبَحَ لِغَيْرِ اللَّهِ وَلَعَنَ اللَّهُ مَنْ آوَى مُحْدِثًا وَلَعَنَ اللَّهُ مَنْ لَعَنَ وَالِدَيْهِ وَلَعَنَ اللَّهُ مَنْ غَيَّرَ الْمَنَارَ  

We said to ʿAli: Tell us of something that the Messenger of Allah ﷺ told you in secret. He said: He did not tell me anything in secret that he concealed from the people, but I heard him say: ʿMay Allah curse the one who slaughters in the name of something other than Allah, may Allah curse the one who gives refuge to an offender, may Allah curse the one who curses his parents and may Allah curse the one who changes the boundary markers.”  

أَخْبِرْنَا بِشَيْءٍ أَسَرَّهُ إِلَيْكَ رَسُولُ اللهِ ﷺ فَقَالَ مَا أَسَرَّ إِلَيَّ شَيْئًا كَتَمَهُ النَّاسَ وَلَكِنْ سَمِعْتُهُ يَقُولُ لَعَنَ اللهُ مَنْ ذَبَحَ لِغَيْرِ اللهِ وَلَعَنَ اللهُ مَنْ آوَى مُحْدِثًا وَلَعَنَ اللهُ مَنْ لَعَنَ وَالِدَيْهِ وَلَعَنَ اللهُ مَنْ غَيَّرَ تُخُومَ الْأَرْضِ يَعْنِي الْمَنَارَ