Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him): "Do not single out the night of Friday from among the other nights for standing in prayer, and do not single out Friday from among the other days for fasting, unless it falls within fasts that you are already keeping."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8490