What is the manner of betrothal, its conditions, and the duties of the suitor and the one being sought in marriage?

The discussion on the rulings of engagement (khitbah) is extensive. We advise you to refer to books of jurisprudence and rulings under the chapter on marriage (nikah). There are also specialized books on marriage, such as "Tuhfat al-'Arus" (The Bride's Gift) and "Adab az-Zifaf" (Etiquette of Wedding), and others. You can also refer to the fatwas with the following numbers: 30289, 30533, 30612, 30952, 31391, 31408, 32677, 32857, 31771, 31922, 32945, 905. For further information, you can access the fatwa index and then go to "The Chapter on Engagement and Related Matters."