وَحَدَّثَنِي مَالِكٌ، عَنْ رَبِيعَةَ بْنِ أَبِي عَبْدِ الرَّحْمَنِ، أَنَّهُ قَالَ قَدِمَ عَلَى عُمَرَ بْنِ الْخَطَّابِ رَجُلٌ مِنْ أَهْلِ الْعِرَاقِ فَقَالَ لَقَدْ جِئْتُكَ لأَمْرٍ مَا لَهُ رَأْسٌ وَلاَ ذَنَبٌ ‏.‏ فَقَالَ عُمَرُ مَا هُوَ قَالَ شَهَادَاتُ الزُّورِ ظَهَرَتْ بِأَرْضِنَا ‏.‏ فَقَالَ عُمَرُ أَوَقَدْ كَانَ ذَلِكَ قَالَ نَعَمْ ‏.‏ فَقَالَ عُمَرُ وَاللَّهِ لاَ يُؤْسَرُ رَجُلٌ فِي الإِسْلاَمِ بِغَيْرِ الْعُدُولِ ‏.‏

Malik related to me that Rabia ibn Abi Abd ar-Rahman said, "AnIraqi man came before Umar ibn al-Khattab and said, 'I have come toyou because of a matter which has no beginning and no end.' Umar said,'What is it?' The man said, 'False testimony has appeared in ourland.' Umar said, 'Is that so?' He said, 'Yes.' Umar said, 'By Allah!A man is not detained in Islam without just witnesses.' " Translation Not Available

Book Ref: Muwatta Imam Malik Book 36 Hadith 1405
Web Ref:  Muwatta Imam Malik Book 36 Hadith 4