It is narrated from Sayyiduna Abbas (may Allah be pleased with him) that once, at night, I was with the Prophet (peace and blessings of Allah be upon him). The Prophet (peace and blessings of Allah be upon him) said: "Look, do you see any star in the sky?" I said: Yes! He said: "Which star do you see?" I replied: Thurayya (the Pleiades). He said: "From your descendants, there will be as many rulers of this Ummah as the number of stars in Thurayya, among whom two will be afflicted with trials."