Sahih Muslim Book - 15, Hadith - 3039

وَحَدَّثَنَا أَحْمَدُ بْنُ عَبْدَةَ الضَّبِّىُّ حَدَّثَنَا يَزِيدُ - يَعْنِى ابْنَ زُرَيْعٍ - حَدَّثَنَا حَبِيبٌ الْمُعَلِّمُ عَنْ عَطَاءٍ عَنِ ابْنِ عَبَّاسٍ أَنَّ النَّبِىَّ -صلى الله عليه وسلم- قَالَ لاِمْرَأَةٍ مِنَ الأَنْصَارِ يُقَالُ لَهَا أُمُّ سِنَانٍ « مَا مَنَعَكِ أَنْ تَكُونِى حَجَجْتِ مَعَنَا ». قَالَتْ نَاضِحَانِ كَانَا لأَبِى فُلاَنٍ - زَوْجِهَا - حَجَّ هُوَ وَابْنُهُ عَلَى أَحَدِهِمَا وَكَانَ الآخَرُ يَسْقِى عَلَيْهِ غُلاَمُنَا. قَالَ « فَعُمْرَةٌ فِى رَمَضَانَ تَقْضِى حَجَّةً. أَوْ حَجَّةً مَعِى ».

It was narrated from Ibn Abbas that the Prophet (SAW) said to a woman from among the Ansar, whose name was Umm Sinan: “What kept you from performing Hajj with us?” She said: “Abu Fulan” – her husband- “has two camels; he and his son went for Hajj on one of them, and our slave uses the other one to bring the water.” He said: “Umrah in Ramadan is equivalent (in reward) to Hajj” – or he said: “to Hajj with me.”