Fifty-five days after the incident of Abraha, in the city of Makkah, on the 12th of Rabe’e ul Awwal, which comes to the 20th of April, at the crack of dawn, the Holy Prophet (Sallallahu alaihi wa sallam) arrived in this world. His Noor illuminated the world for posterity and the happiness descended over the world.
The animals of jungle congratulated each other on His Milad. For 3 days the Ka’aba swayed out of ecstasy.
Abdul Muttalib (May Allah be well pleased with him) saw it. On that day, there was a special radiance in this world. There was surge of happiness everywhere. On that day the angels were ordered to open all the doors of the skies and the heavens and to gather on the earth. All the devils were imprisoned. All the idols fell on their faces. The holy fire of Persia got extinguished. An earthquake shook the palaces of the Khosrau. A river called sawa suddenly dried up.
(Khasais Kubra, Vol 1, Pg No: 47)
Why all these arrangements? Because that Master is coming whose arrival was awaited by everybody. The earlier Prophets used to give glad tidings of His arrival. He (Sallallahu alaihi wa sallam) is the prayer of Hadhrat Ibrahim (Peace be upon him) and the greeting of Hadhrat Isa (Peace be upon him). Prophet Moosa (Peace be upon him) wished to be in His Ummah. To celebrate the arrival of the Holy Prophet (Sallallahu alaihi wa sallam) 3 flags were set up, one in the east, one in the west and one on the Ka’aba.
(Mawahib Ladunniya, Vol 1, Pg No: 211)