What is the legal basis for the obligation of Jumu'ah (Friday Prayer)?

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The obligation of Jumu'ah is established by the Book (Quran), the Sunnah, and the Consensus (Ijma). The Quranic evidence is the command to hasten to the remembrance of Allah and abandon selling when the call is made on Friday (Quran 59:9). The command implies obligation, as hastening is only obligatory for what is obligatory. Abandoning the sale is due to the prayer being obligatory. The term 'hasten' (Isha'u) here means going towards the prayer, not necessarily running quickly, as shown by other verses where it means coming or striving (Quran 80:8, Quran 17:19, Quran 2:205, Quran 5:33). Umar (may Allah be pleased with him) reportedly recited it as 'Go forth to the remembrance of Allah'. The Sunnah includes the Prophet's saying that those who abandon Jumu'ah will have their hearts sealed, and the hadith stating that whoever leaves three Jumu'ah prayers out of negligence will have his heart sealed by Allah. Furthermore, the Prophet declared Jumu'ah a right incumbent upon every Muslim, except for four categories: a male slave, a woman, a child, or a sick person. Another tradition states that abandoning it, whether during the Prophet's life or after, due to contempt or denial, nullifies one's prayer, zakah, Hajj, and fast until repentance.