Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates: The Prophet (peace and blessings be upon him) said: "Among the indications of affliction and the signs of the Hour is that minds will be dulled, understanding will diminish, killing will become abundant, the signs of goodness will be lifted, and tribulations will appear."
Imam al-Tabarani recorded it. Its chain contains a narrator, Afiyah bin Ayyub, and he is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الفتن - أعاذنا الله منها / 12464