Abu Hurairah reported,

The Messenger of Allah ﷺ asked, "How many days of the month have passed?"We said, "Twenty-two, and eight remain."The Messenger of Allah ﷺ said, "The month is like this, and like this, and like this," three times, and he held back one finger.

Azami 4336

Sahih

عن أبي هريرة، قال

قال رسول الله ﷺ: كم مضى من الشهر؟ قال: قلنا: اثنان وعشرون، وبقيت ثمان، فقال رسول الله ﷺ: الشهر هكذا، والشهر هكذا، والشهر هكذا ثلاث مرات، وأمسك واحدة.

الأعظمي 4336صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Fasting
Chapter
Obligation of fasting, its virtue, and its rulings
Section
Month can be twenty-nine days
Numbering
Jami al-Kamil 4336 (2nd edition)
Azami 4336