mentioned both of them and grouped them together, so if it comes out of one of them, it has come out of both of them, and this is what Yahya intended. The singular is marjanah (a single piece of coral).
ذكرهمَا وجمعهما، فَإِذا خرج من أَحدهمَا فقد خرج مِنْهُمَا، وَهُوَ الَّذِي أَرَادَ يحيى. والواحدة: مرْجَانَة.
