Hawzah News Agency- The Holy Prophet (pbuh and his family) said:
لَنْ یَعْمَلَ ابْنُ آدَمَ عَمَلًا أَعْظَمَ عِنْدَ اللَّهِ تَبَارَکَ وَ تَعَالَی مِنْ رَجُلٍ قَتَلَ نَبِیّاً أَوْ إِمَاماً أَوْ هَدَمَ الْکَعْبَهَ الَّتِی جَعَلَهَا اللَّهُ عَزَّ وَ جَلَّ قِبْلَهً لِعِبَادِهِ أَوْ أَفْرَغَ مَاءَهُ فِی امْرَأَهٍ حَرَاماً.
A son of Adam will never commit an act of greater gravity [in sin] before Allah, Blessed and Exalted, than a man who slays a prophet or an Imam, or demolishes the Kaaba which Allah, the Mighty and Exalted, appointed as the qiblah for His servants, or discharges his fluid into a woman unlawfully [through adultery or fornication].
Al-Khisal,Book 3,Hadith 109
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