وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ رَبِيعَةَ بْنِ أَبِي عَبْدِ الرَّحْمَنِ، أَنَّ الزُّبَيْرَ بْنَ الْعَوَّامِ، لَقِيَ رَجُلاً قَدْ أَخَذَ سَارِقًا وَهُوَ يُرِيدُ أَنْ يَذْهَبَ بِهِ إِلَى السُّلْطَانِ فَشَفَعَ لَهُ الزُّبَيْرُ لِيُرْسِلَهُ فَقَالَ لاَ حَتَّى أَبْلُغَ بِهِ السُّلْطَانَ ‏.‏ فَقَالَ الزُّبَيْرُ إِذَا بَلَغْتَ بِهِ السُّلْطَانَ فَلَعَنَ اللَّهُ الشَّافِعَ وَالْمُشَفِّعَ ‏.‏

Yahya related to me from Malik from Rabia ibn Abi Abd ar-Rahmanthat az-Zubayr ibn al-Awwam came across a man who had taken hold of athief and was intending to take him to the Sultan. Az-Zubayr ibn al-Awwam interceded for him to let him go. He said, "No. Not until I takehim to the Sultan." Az-Zubayr said, "When you reach the Sultan withhim, Allah curses the one who intercedes and the one who accepts theintercession." Translation Not Available

Book Ref: Muwatta Imam Malik Book 41 Hadith 1533
Web Ref:  Muwatta Imam Malik Book 41 Hadith 29