Hadith 502810
Chapter 7: Tahajjud - كتاب صلاة الليل
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، أَنَّهُ قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ عَامِرِ بْنِ رَبِيعَةَ، يَقُولُ إِنِّي لأُوتِرُ وَأَنَا أَسْمَعُ الإِقَامَةَ، أَوْ بَعْدَ الْفَجْرِ . يَشُكُّ عَبْدُ الرَّحْمَنِ أَىَّ ذَلِكَ قَالَ .
Yahya related to me from Malik that Abd ar-Rahman ibn al-Qasim said, "I heard Abdullah ibn Amir ibn Rabia say, 'I sometimes pray witr while hearing the iqama, or after the break of dawn.' " Abd ar-Rahman was not certain which he said.
Reference Muwatta Malik 502810
USC-MSA web (English) reference : Book 7, Hadith 27