After Prophet Muhammad settled in Abu Ayyub al-Ansari's home in Medina, he purchased the lot next to it and started building a masjid there. This became known as Al Masjid an-Nabawi (the Prophet's Mosque) and Masjid al-Haram (the Sacred Mosque). Azan was legislated soon after, and within half a year after hijra the Second Pact of Brotherhood was made between the Muhajireen and Ansaar. Practical Lessons:- 1. The pact of brotherhood endured. The prophet would assign a brother/sister to a new convert throughout the Madani period. From this we can extrapolate the importance of looking after the needs of new converts.- 2. A brotherhood based on faith is the strongest from of brotherhood. Quran 59:9 describes the ansaar's generosity, saying that when they give to the muhajireen they don't feel any attachment to what they're giving, and those who are protected from the stinginess of the soul will be successful- 3. Brotherhood and unity isn't just rhetoric. The prophet turned it into action- 4. Islamic laws were gradually introduced to the community. We need to do a similar thing with our communities and families today, so that it's done in a way that will be gradual and well receivedLecture notes available at http://www.why-quran.org/blog/31-building-the-prophets-mosque-masjid-al-haram/Subscribe at http://www.why-quran.org/subscribe to watch the lectures live and participate in the Q&A at the end of each class.Video recording of this lecture + Q&A available on YouTube at https://www.youtube.com/watch?v=YO1Yfm3X-SY&list=PLpkB0iwLgfTat-Pgh4W3WFmupPamiC9UT.