رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1224
The Book of Virtues
The Prohibition of Observing Saum (Fasting) after the Middle of Sha'ban
عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّه عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ قَالَ: لاَ يَتَقَدَّمَنَّ أَحَدُكُمْ رَمَضَانَ بِصَوْمِ يَوْمٍ أَوْ يَوْمَيْنِ، إِلاَّ أَنْ يَكُونَ رَجُلٌ كَانَ يَصُومُ صَوْمَهُ، فَلْيَصُمْ ذَلِكَ الْيَوْمَ . ((مُتَّفَقٌ عَلَيْهِ))
Abu Hurairah (May Allah be pleased with him) reported: The Prophet (ﷺ) said, "Do not observe Saum (fasting) for a day or two days preceding Ramadan. However, if a person is in the habit of observing Saum on a particular day (which may fall on these dates), he may fast on that day." [Al-Bukhari and Muslim].
Riyad as-Salihin, 1224