Narrated Ibn Umar:

The Prophet assumed the state of Ihram for Umra and Hajj, and we to assumed it for Hajj with him. When we arrived at Mecca, the Prophet ﷺ said, "Whoever does not possess a Hadi should regard his Ihram for Umra only." The Prophet had a Hadi with him. 'Ali bin Abi Talib came to us from Yemen with the intention of performing Hajj. The Prophet ﷺ said (to him), "With what intention have you assumed the Ihram, for your wife is with us?" 'Ali said, "I assumed the lhram with the same intention as that of the Prophet ." The Prophet ﷺ said, "Keep on the state of lhram, as we have got the Hadi."

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، عَنْ حُمَيْدٍ الطَّوِيلِ، حَدَّثَنَا بَكْرٌ، أَنَّهُ ذَكَرَ لاِبْنِ عُمَرَ أَنَّ أَنَسًا حَدَّثَهُمْ أَنَّ النَّبِيَّ ﷺ أَهَلَّ بِعُمْرَةٍ وَحَجَّةٍ، فَقَالَ أَهَلَّ النَّبِيُّ ﷺ بِالْحَجِّ، وَأَهْلَلْنَا بِهِ مَعَهُ، فَلَمَّا قَدِمْنَا مَكَّةَ قَالَ " مَنْ لَمْ يَكُنْ مَعَهُ هَدْىٌ فَلْيَجْعَلْهَا عُمْرَةً ". وَكَانَ مَعَ النَّبِيِّ ﷺ هَدْىٌ، فَقَدِمَ عَلَيْنَا عَلِيُّ بْنُ أَبِي طَالِبٍ مِنَ الْيَمَنِ حَاجًّا فَقَالَ النَّبِيُّ ﷺ " بِمَ أَهْلَلْتَ فَإِنَّ مَعَنَا أَهْلَكَ ". قَالَ أَهْلَلْتُ بِمَا أَهَلَّ بِهِ النَّبِيُّ ﷺ. قَالَ " فَأَمْسِكْ، فَإِنَّ مَعَنَا هَدْيًا ".