Story :)
 

Once, Hazrat Imam Hassan and Imam Hussain (R.A) had gone outside for a long time and Hazrat Bibi Fatima (R.A) became very worried. She was still thinking about where the children might have gone when the Beloved Rasool (S.A.W) arrived at her home. She immediately asked her beloved father, “Ya Rasoolullah (S.A.W), Imam Hassan and Imam Hussain cannot be found. They have gone out and we do
not know their whereabouts.”

Just then, Hazrat Jibra’il (A.S) descended and said, “Ya Rasoolullah (S.A.W), there is nothing to worry about. Both the children are at a certain place and Almighty Allah has appointed angels to protect them.”

On hearing this, Rasoolullah (S.A.W) went to the spot pointed out by Hazrat Jibra’il (A.S) and He (S.A.W) saw that both the beloved grandsons were resting and an angel had one of his wings under them and was shading them with the other wing. The Beloved Rasool (S.A.W) kissed both of them and carried them home to Hazrat Bibi Fatima (R.A).

Reference ???