عَنْ أَنَسِ بْنِ مَالِكٍ رَضِيَ اللَّهُ عَنْهُ قَالَ قِيلَ يَا رَسُولَ اللَّهِ مَتَى نَدَعُ الْأَمْرَ بِالْمَعْرُوفِ وَالنَّهْيَ عَنِ الْمُنْكَرِ قَالَ ((إِذَا ظَهَرَ فِيكُمْ مَا ظَهَرَ فِي بَنِي إِسْرَائِيلَ إِذَا كَانَتِ الْفَاحِشَةُ فِي كِبَارِكُمْ وَالْمُلْكُ فِي صِغَارِكُمْ وَالْعِلْمُ فِي رِذَالِكُمْ))
It is narrated from Sayyiduna Anas bin Malik, may Allah be pleased with him, that someone said: O Messenger of Allah! When can we stop enjoining good and forbidding evil? The Prophet (peace and blessings be upon him) said: When those matters become apparent which appeared among the Children of Israel, and they are: when indecency appears among the elders, kingship among the young, and knowledge among the lowly people.