(7) Fasting
كتاب الصوم
(7a) Chapter: Voluntary Fasting - Section 1
(6) باب القضاء - الفصل الأول
Mishkat al-Masabih 2045 
He said that when God’s messenger was asked about fasting on Monday he said, “On it I was born and on it the revelation was first sent down to me.”* *The meaning seems to be that as this day is so distinguished, one could not choose a better one. Muslim transmitted it.
وَعَن أَبِي قَتَادَةَ قَالَ: سُئِلَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ صَوْمِ الِاثْنَيْنِ فَقَالَ: «فِيهِ وُلِدْتُ وَفِيهِ أُنْزِلَ عَلَيَّ» . رَوَاهُ مُسْلِمٌ
 صَحِيح  (الألباني)حكم :
Reference : Mishkat al-Masabih 2045
In-book reference : Book 7, Hadith 88