Sufyan on Jihad: We only fight idolaters if they fight us first

Al-Shaybani reported: Sufyan al-Thawri, may Allah have mercy on him, said, “Fighting the idolaters is not an obligation unless they begin it themselves, in which case it is required to fight them in defense.”

Source: Sharḥ al-Siyar al-Kabīr 1/187

عن الشيباني قال سفيان الثوري رحمه الله الْقِتَالُ مَعَ الْمُشْرِكِينَ لَيْسَ بِفَرْضٍ إلَّا أَنْ تَكُونَ الْبِدَايَةُ مِنْهُمْ فَحِينَئِذٍ يَجِبُ قِتَالُهُمْ دَفْعًا

1/187 شرح السير الكبير