We find the practice (Sunnah) of Prophet Ibrahim (a.s.) in the Holy Quran thus:
قَدْ كَانَتْ لَكُمْ أُسْوَةٌ حَسَنَةٌ فِي إِبْرَاهِيْمَ وَ الَّذِيْنَ مَعَهُ إِذْ قَالُوْا لِقَوْمِهِمْ
“Indeed, for you there is an excellent example in Ibrahim (a.s.) and those with him when they said to their people”
إِنَّا بُرَآؤُا مِنْكُمْ وَ مِمَّا تَعْبُدُوْنَ مِنْ دُوْنِ اللهِ
“Surely we dissociate from you and from whatever you worship besides Allah”
كَفَرْنَا بِكُمْ
“We deny you”
وَ بَدَا بَيْنَنَا وَ بَيْنَكُمُ الْعَدَاوَةُ وَ الْبَغْضَاءُ أَبَداً حَتَّى تُؤْمِنُوْا بِاللهِ وَحْدَهُ
“And enmity and hatred have appeared between us and you forever until you believe in Allah alone.”
[Surah Mumtahenah (60): Verse 4]
This is the practice (Sunnah) of an Ulul Azm Prophet, His Eminence Ibrahim (a.s.) in which there is both, Tabarra as well as condemnation of the enemies of religion!