Sunan Abi Dawud 1736
Ibn `Abbas said the Messenger of Allah (SWAS) was at al-Rawha.  There he met some riders. He saluted them and asked who they were.  They replied that they were Muslims.  They asked who are you.  They (the companions) replied he is the Messenger of Allah (SWAS).  A woman became upset :
she took her child by his arm and lifted him from her litter at the camel. She said Messenger of Allah (SWAS) can this (child) be credited with having performed Hajj.  He replied Yes, and you will have a reward.
حَدَّثَنَا أَحْمَدُ بْنُ حَنْبَلٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ إِبْرَاهِيمَ بْنِ عُقْبَةَ، عَنْ كُرَيْبٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِالرَّوْحَاءِ فَلَقِيَ رَكْبًا فَسَلَّمَ عَلَيْهِمْ فَقَالَ ‏"‏ مَنِ الْقَوْمُ ‏"‏ ‏.‏ فَقَالُوا الْمُسْلِمُونَ ‏.‏ فَقَالُوا فَمَنْ أَنْتُمْ قَالُوا رَسُولُ اللَّهِ صلى الله عليه وسلم ‏.‏ فَفَزِعَتِ امْرَأَةٌ فَأَخَذَتْ بِعَضُدِ صَبِيٍّ فَأَخْرَجَتْهُ مِنْ مِحَفَّتِهَا فَقَالَتْ يَا رَسُولَ اللَّهِ هَلْ لِهَذَا حَجٌّ قَالَ ‏"‏ نَعَمْ وَلَكِ أَجْرٌ ‏"‏ ‏.‏