Abu Na’eem reported: Sufyan Ath-Thawri, may Allah have mercy on him, said, “Behave with excellence in your privacy and Allah will make your behavior excellent in public. Set right what is between you and Allah, and He will set right what is between you and the people. Work for your Hereafter and Allah will suffice your affairs in this world. Sell your worldly life for your Hereafter and you will profit in them both entirely. Do not sell your Hereafter for your worldly life or you will lose them both entirely.”
Source: Hilyat Al-Awliya 35
عن أبو نعيم قال سفيان الثوري رحمه الله وَأَحْسِنْ سَرِيرَتَكَ يُحْسِنِ اللَّهُ عَلَانِيَتَكَ وَأَصْلِحْ فِيمَا بَيْنَكَ وَبَيْنَ اللَّهِ يَصْلُحِ اللَّهُ فِيمَا بَيْنَكَ وَبَيْنَ النَّاسِ وَاعْمَلْ لِآخِرَتِكَ يَكْفِكَ اللَّهُ أَمْرَ دُنْيَاكَ بِعْ دُنْيَاكَ بِآخِرَتِكَ تَرْبَحْهُمَا جَمِيعًا وَلَا تَبِعْ آخِرَتَكَ بِدُنْيَاكَ فَتَخْسَرَهُمَا جَمِيعًا
35 حلية الأولياء وطبقات الأصفياء ذكر طوائف من جماهير النساك والعباد أبو عبد الله سفيان بن سعيد الثوري
Source: Daily Hadith