Laith bin Saad says: Once I was sitting near Muawiyah. Kaab bin Ahbar was also present. I asked him. What have you read in your holy books about the signs and events of the birth of the Holy Prophet (S)? Have you found his grace therein? Kaab looked at Muawiyah to ascertain whether he was happy with his speaking or not. Kaab said: I have read seventy-two books which were revealed from heavens. I have also read the Books of Danial (a.s.).
All these books contain the description of the Holy Prophet (S) and the birth of his progeny and in all of them his name appears very clearly. Angels did not come down at the birth of any prophet except that of Isa (a.s.) and Muhammad (S). So also the curtains of the skies were never lifted for any woman except for Maryam (a.s.) and Amina (a.s.). And no angels were ever appointed for any woman but at the time of the pregnancy of Isa (a.s.) and Muhammad (S).
The sign of the pregnancy of Muhammad was that the night on which Amina conceived, an announcement was made in all the seven skies giving glad tidings in the words: Congratulations to you, O Amina, the Royal Pearl, the embryo of the Holy Prophet (S) has settled in the shell of your charity, piety and gracefulness. This pleasing news was broadcast throughout the universe to such an extent that there was no walking or flying creature that did not become aware of the birth of the Holy Prophet (S). On the night of the birth of the Holy Prophet (S) 70000 palaces of pearls were built and named palaces of the holy birth.
All the gardens of Paradise were decorated and all their residents were told: Be happy and continue to prosper as the Prophet of your friends is born. Every Garden of Paradise smiled in response and will continue to smile till Judgment Day. And I have heard that there is a fish named Tamusa which is the biggest of them all and it has a thousand tails. Its back is so large that cows larger than the earth numbering 700000 walk on it simultaneously.
Everyone of those cows has 70000 emerald horns. That fish has no feeling of the walking of all those cows on its back. That fish made movements happily on hearing the news of the birth of the Holy Prophet (S). Had Allah not calmed it, the whole world would have overturned.
And I have heard that on that day there was no mountain which did not congratulate another and all raised the slogan of: There is no god except Allah and that all the mountains had bent to honor mount Abu Qubais on account of the birth of the Holy Prophet (S). And the trees along with their branches and fruits were praising Allah due to pleasure caused by the birth of the Holy Prophet (S). Seventy columns of various lights were raised between the earth and sky none of which resembled the other.
The soul of Adam (a.s.) was given the glad tiding of the birth of the Holy Prophet (S) when the beauty of His Eminence, multiplied seventy times due to the happiness. The bitterness of death, at that time, faded away from his throat and the Hauze Kauthar overflowed with pleasure and it flung out from his bottom seventy thousand palaces of pearls and rubies to be sacrificed on the Holy Prophet (S) and Satan was tied up in chains in a fort for forty days and its plank was drowned in water for forty days and idols fell upside down and began to cry and wail and a voice rose from the Holy Kaaba: O people of Quraish! Unto you has arrived one who gives glad tidings and warns of chastisement and with him is eternal honor and unending benefit.
He is the last prophet. And we have read in divine scriptures that his progeny is after him, better than all others in the world and the people of the world will be protected from divine chastisement so long as any one of them exists. Muawiyah asked: “O Abu Ishaq! Who are in his progeny?” Kaab said: “They are the sons of Fatima (a.s.).” On hearing this, the color of the face of Muawiyah changed and he began to fiddle with his beard.
Then Kaab continued: “And we have also read about her two sons whom oppressors would kill; that those who will be thus martyred are two sons of Fatima (a.s.) who will be killed by the worst of creation.” Muawiyah asked: “Who will kill them?” He replied: “A man from Quraish will kill them.” Upon this Muawiyah became restless and roared: “Get away from me if at all you want to be safe.” Then we came back.
Reference:Hayat Al-Qulub Vol. 2