Musnad Ahmad 26:320

Abu Ahmad al-Zubayri narrated to us, Bashir ibn Salman narrated to us, from Sayyar, from Tariq ibn Shihab, who said: We were sitting with Abdullah, and a man came and said: "The prayer has been established." So he stood up, and we stood up with him. When we entered the mosque, we saw the people bowing at the front of the mosque, so he said the takbir and bowed, and we bowed. Then we walked and did the same as he had done. A man passed by, hurrying, and said: "Peace be upon you, O Abu Abd al-Rahman." He replied: "Allah and His Messenger have spoken the truth." When we finished the prayer and returned, he entered his home, and we sat down. Some of us said to others: "Did you not hear his reply to the man: 'Allah has spoken the truth, and His Messengers have conveyed'? Which of you will ask him?" Tariq said: "I will ask him." So he asked him when he came out, and he mentioned from the Prophet, peace and blessings of Allah be upon him: "That before the Hour, there will be the greeting of the elite, the spread of trade until a woman helps her husband in trade, the severing of ties of kinship, false testimony, the concealing of true testimony, and the appearance of the pen."