Narrated Ibn `Umar: The Prophet (ﷺ) said, "The month is like this and this," (at the same time he showed the fingers of both his hands thrice) and left out one thumb on the third time
Book 30 · Hadith 18
صحيح البخاري
Narrated Ibn `Umar: The Prophet (ﷺ) said, "The month is like this and this," (at the same time he showed the fingers of both his hands thrice) and left out one thumb on the third time