قَدْ كَانَتْ لَكُمْ اُسْوَةٌ حَسَنَةٌ فِيْٓ اِبْرٰهِيْمَ وَالَّذِيْنَ مَعَهٗۚ اِذْ قَالُوْا لِقَوْمِهِمْ اِنَّا بُرَءٰۤؤُا مِنْكُمْ وَمِمَّا تَعْبُدُوْنَ مِنْ دُوْنِ اللّٰهِ ۖ كَفَرْنَا بِكُمْ وَبَدَا بَيْنَنَا وَبَيْنَكُمُ الْعَدَاوَةُ وَالْبَغْضَاۤءُ اَبَدًا حَتّٰى تُؤْمِنُوْا بِاللّٰهِ وَحْدَهٗٓ اِلَّا قَوْلَ اِبْرٰهِيْمَ لِاَبِيْهِ لَاَسْتَغْفِرَنَّ لَكَ وَمَآ اَمْلِكُ لَكَ مِنَ اللّٰهِ مِنْ شَيْءٍۗ رَبَّنَا عَلَيْكَ تَوَكَّلْنَا وَاِلَيْكَ اَنَبْنَا وَاِلَيْكَ الْمَصِيْرُ ( الممتحنة: ٤ )
Qad kaanat lakum uswatun basanatun feee Ibraaheema wallazeena ma'ahoo iz qaaloo liqawmihim innaa bura'aaa'u minkum wa mimmaa ta'budoona min doonil laahi kafarnaa bikum wa badaa bainanaa wa bainakumul 'adaawatu wal baghdaaa'u abadan hattaa tu'minoo billaahi wahdahooo illaa qawla Ibraheema li abeehi la astaghfiranna laka wa maaa amliku laka minal laahi min shai; rabbanaa 'alaika tawakkalnaa wa ilaika anabnaa wa ilaikal maseer (al-Mumtaḥanah 60:4)
There has already been for you an excellent pattern in Abraham and those with him, when they said to their people, "Indeed, we are disassociated from you and from whatever you worship other than Allah. We have denied you, and there has appeared between us and you animosity and hatred forever until you believe in Allah alone" – except for the saying of Abraham to his father, "I will surely ask forgiveness for you, but I have not [power to do] for you anything against Allah. Our Lord, upon You we have relied, and to You we have returned, and to You is the destination. (Al-Mumtahanah  : 4)
1 Mufti Taqi Usmani
Indeed, there is an excellent example for you in Ibrāhīm and those with him, when they said to their people, “We disown you and what you worship instead of Allah. We disbelieve in you. Enmity and hatred has arisen between us and you forever, unless you believe in Allah alone”,- but (his example is) not (to be followed) in what Ibrāhīm said to his father, “I will pray to my Lord for your forgiveness, and I have no power from Allah (to do any thing) for you.” - “O our Lord, in You alone we trust, and to You alone we turn for help, and to You is the final return.