Riyad as-Salihin 1282
Ibn 'Abbas (May Allah be pleased with them) reported:
The Prophet (ﷺ) came across a caravan at Ar-Rauha' and asked who the people in the caravan were. They replied that they were Muslims. They asked: "Who are you?" He (ﷺ) said, "I am the Messenger of Allah." Then a woman lifted up a boy to him and asked: "Would this child be credited with having performed the Hajj (pilgrimage)?" Whereupon he (ﷺ) said, "Yes, and you will have a reward." [Muslim] .
وعن ابن عباس رضي الله عنهما أن النبي صلى الله عليه وسلم لقي ركبا بالروحاء فقال‏:‏ ‏"‏من القوم‏؟‏‏"‏ قالوا‏:‏ المسلمون‏.‏ قالوا من أنت‏؟‏ قال‏:‏ ‏"‏رسول الله‏"‏ فرفعت امرأة صبيًا فقالت‏:‏ ألهذا حج‏؟‏ قال ‏"‏نعم ولك أجر‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏