Showing gratitude to Allah on the birth of the Holy Prophet s is an essential part of faith. A sincere Muslim will never refuse to express happiness on the Prophet's s birth, as he understands that by doing so he is mindful of Allah for this blessing. Refusing to show happiness on the Prophet's s birth is to disregard Allah's blessing, and to do so while claiming to love him s is nothing short of hypocrisy. The expression of happiness and gratitude felt by the Umma for this blessing manifested itself as an act of commemoration, which marked the 12th of Rabi al-Awwal as the day of the Prophet's s birth. This act of commemoration spread far and wide across the Muslim world, and it was unanimously accepted by the eminent authorities of Islam. In this book, which is the third instalment of `The Imams and Hadith Scholars Series', his eminence, Shaykh-ul-Islam Dr Muhammad Tahir-ul-Qadri, has documented this acceptance. He has compiled the verdicts of the classical scholars on this issue and has proven that the great luminaries of Islam accepted this celebration and authored books in its favour.