Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) narrates: The Prophet Muhammad (peace be upon him) passed by a woman. It was said to her: This is the Messenger of Allah. So the woman took hold of the arm of her child who was with her. She said: O Messenger of Allah (peace be upon him)! Has this child performed Hajj? The Prophet (peace be upon him) replied: Yes, and you will also have the reward (for it).
Hadith Referenceصحیح ابن حبان / كتاب الحج / 3797
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الإرواء» (985)، «صحيح أبي داود» (1525).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم