Silsilat al-Ahadith al-Sahihah

The Messenger of Allah (peace and blessings be upon him) said: "When the sons of Abu al-As reach thirty men, they will find fault and deficiency in the religion of Allah, they will enslave the servants of Allah, and they will exchange the wealth of Allah among themselves." This hadith is narrated from Sayyiduna Abu Hurairah, Sayyiduna Abu Sa'id al-Khudri, Sayyiduna Abu Dharr al-Ghifari, Sayyiduna Mu'awiyah bin Sufyan, and Sayyiduna Abdullah bin Abbas (may Allah be pleased with them).