أَخْبَرَنِي إِبْرَاهِيمُ بْنُ الْحَسَنِ، قَالَ حَدَّثَنَا حَجَّاجُ بْنُ مُحَمَّدٍ، قَالَ قَالَ ابْنُ جُرَيْجٍ قُلْتُ لِعَطَاءٍ بَلَغَنِي أَنَّكَ تَرْكَعُ قَبْلَ الْجُمُعَةِ اثْنَتَىْ عَشْرَةَ رَكْعَةً مَا بَلَغَكَ فِي ذَلِكَ قَالَ أَخْبَرَتْ أُمُّ حَبِيبَةَ عَنْبَسَةَ بْنَ أَبِي سُفْيَانَ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏"‏ مَنْ رَكَعَ اثْنَتَىْ عَشْرَةَ رَكْعَةً فِي الْيَوْمِ وَاللَّيْلَةِ سِوَى الْمَكْتُوبَةِ بَنَى اللَّهُ عَزَّ وَجَلَّ لَهُ بَيْتًا فِي الْجَنَّةِ ‏"‏ ‏.‏

Ibn Juraij said: "I said to Ata: 'I heard that you pray twelve rak'ahs before Jumu'ah. What did you hear concerning that?' He said: 'I was told that Umm Habibah bin Abi Sufyan said: "I heard the Messenger of Allah (PBUH) say: 'Whoever prays twelve rak'ahs during the day and night, apart from the prescribed prayers, Allah (SWT), the Mighty and Sublime, will build for him a house in Paradise.'" Translation Not Available

Book Ref: Sunan An Nisai Book 20 Hadith 1797
Web Ref:  Sunan An Nisai Vol 2 Book 20 Hadith 1798