´It was narrated form Muhammad bin Sad Abi Waqqas, from his father, that:` the Prophet struck one hand with the other and said: "The month is like this and like this and like this," retaining one finger the third time.
Hadith Referenceسنن نسائي / كتاب الصيام / 2137
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
Hadith Takhrij«صحیح مسلم/الصوم4 (1086)، سنن ابن ماجہ/فیہ8 (1657)، (تحفة الأشراف: 3920) ، مسند احمد 1/184 (صحیح)»