Muawiyah bin Qurrah narrated from his father (Sayyiduna Qurrah, may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: "Fasting on the white days is equal to fasting the whole year, even if you break your fast." ( «كما قال الشيخ أحمد الساعاتي فى الفتح الرباني 157/9» ).