Sa3i is one part of Hajj that depict the action taken by lady Hajar when she was left alone with her baby in the holy valley and kept going between two hills hoping someone will come. In my reflections on Sa3i, I realized that it's an amazing experience that bings on inner peace and feeling  content. 
Here is the link to watch the video: https://youtu.be/ZbcXU8uaqD0