Muwatta Malik, Book 20, Hadith 40 (USC-MSA)

Yahya related to me from Malik, from Jafar ibn Muhammad, from his father, that al-Miqdad ibn al-Aswad once went to see AIi ibn Abi Talibat as-Suqya, where he was feeding some young camels of his with a mash of meal and leaves, and he said to him, "This man Uthman ibn Affan is telling people that they cannot do hajj and umra together." Al-Miqdad said, "Ali ibn Abi Talib went off with bits of meal and leaves on his forearms - and I shall never forget the sight of the meal and the leaves on his arms - and went to see Uthman ibn Affan and asked him, 'Are you saying then that people cannot do hajj and umra together?' Uthman replied, 'That is my opinion.' Whereupon AIi got angry and went out saying, 'I am at your service, O Allah, I am at your service for a hajj and an umra together.' " Malik said, "Our position (here in Madina) is that someone who does hajj and umra together should not remove any of his hair, nor should he come out of ihram in any way until he has sacrificed an animal, if he has one. He should come out of ihram at Mina, on the day of the sacrifice."

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ، عَنْ أَبِيهِ، أَنَّ الْمِقْدَادَ بْنَ الأَسْوَدِ، دَخَلَ عَلَى عَلِيِّ بْنِ أَبِي طَالِبٍ بِالسُّقْيَا وَهُوَ يَنْجَعُ بَكَرَاتٍ لَهُ دَقِيقًا وَخَبَطًا فَقَالَ هَذَا عُثْمَانُ بْنُ عَفَّانَ يَنْهَى عَنْ أَنْ يُقْرَنَ بَيْنَ الْحَجِّ وَالْعُمْرَةِ ‏.‏ فَخَرَجَ عَلِيُّ بْنُ أَبِي طَالِبٍ وَعَلَى يَدَيْهِ أَثَرُ الدَّقِيقِ وَالْخَبَطِ - فَمَا أَنْسَى أَثَرَ الدَّقِيقِ وَالْخَبَطِ عَلَى ذِرَاعَيْهِ - حَتَّى دَخَلَ عَلَى عُثْمَانَ بْنِ عَفَّانَ فَقَالَ أَنْتَ تَنْهَى عَنْ أَنْ يُقْرَنَ بَيْنَ الْحَجِّ وَالْعُمْرَةِ فَقَالَ عُثْمَانُ ذَلِكَ رَأْيِي ‏.‏ فَخَرَجَ عَلِيٌّ مُغْضَبًا وَهُوَ يَقُولُ لَبَّيْكَ اللَّهُمَّ لَبَّيْكَ بِحَجَّةٍ وَعُمْرَةٍ مَعًا ‏.‏ قَالَ مَالِكٌ الأَمْرُ عِنْدَنَا أَنَّ مَنْ قَرَنَ الْحَجَّ وَالْعُمْرَةَ لَمْ يَأْخُذْ مِنْ شَعَرِهِ شَيْئًا وَلَمْ يَحْلِلْ مِنْ شَىْءٍ حَتَّى يَنْحَرَ هَدْيًا إِنْ كَانَ مَعَهُ وَيَحِلُّ بِمِنًى يَوْمَ النَّحْرِ ‏.‏

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also referenced under: Book 20, Hadith 746 (In-Book)