The Messenger of Allah SAWA said, “No man who looks at his parents with mercy”, Listen carefully, dear youth. Every person who looks at his parents with mercy, “Allah has written for him, with every look, an accepted Hajj”. With every look with mercy he makes to his parents, an accepted Hajj. Many people go to Hajj, it is not known whether it is accepted or not. It is not known whether it is a beautiful Hajj, or a accepted Hajj, or Hajj performed correctly.
A person who was there said, O Messenger of Allah, and what if one looks at them a hundred times a day? The Prophet SAWA said, “Even if a hundred thousand times one looks at them….” What is a hundred times? If you look at him a hundred thousand times a day, a thousand Hajj will be written for you.
قال رسول الله صلى الله عليه وآله ما من رجل ينظر إلى والديه نظر رحمة إلا كتب الله له بكل نظرة حجة مبرورة قيل يا رسول الله وان نظر اليه في اليوم مئة مرة قال وان نظر اليه في اليوم مئة ألف مرة.
جامع أحاديث الشيعة – السيد البروجردي – ج ٢١ – الصفحة ٤٣٩