On the day when Imam Husayn (a) was born, Allah ordered Jibraeel to descend and congratulate the Holy Prophet (s) on His behalf. While descending, Jibraeel passed over an island where the angel Fitrus had been banished due to his delay in executing a command of Allah. He had been deprived of his wings and expelled to the island, where he had remained for several years praying and asking for Allah’s forgiveness.
When Fitrus saw Jibraeel, he asked where he was going. Jibraeel told him that he was going to the house of Imam Ali (a) to congratulate him on the birth of the Holy Imam (a). When he heard this, Fitrus said, “Can you carry me also along with you? Perhaps Muhammad (s) will recommend my case to Allah.”
When the angels arrived at the house of Imam Ali (a), Jibraeel delivered Allah’s message and then stated the matter of Fitrus. The Holy Prophet (S) said, “Ask the angel to touch the craddle of the newly born child and return to his place in Heaven.” On doing this, Fitrus instantly got his wings back and ascended to Heaven, promising Imam Husayn (a), “O Husayn, from this day onwards, whenever anyone sends their salaams to you, I will always deliver them to you.”