Chapter: What was narrated concerning the prohibition of anticipating Ramadan by fasting before it, except for one who has a habitual pattern of fasting and it coincides with that
´It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:` ‘Do not anticipate Ramadan by fasting one or two days before, except for a man who has a habitual pattern of fasting, in which case let him fast.”
Hadith Referenceسنن ابن ماجه / كتاب الصيام / 1650
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم