The Book of Fasting (Kitab Al-Sawm)

Muslim :: Book 6 : Hadith 2385

Jabir (Allah be pleased with her) narrated that the Holy Prophet (may peace be upon him) separated himself from his wives for a month. (His wives said: ) He came to us on the twenty-ninth day, whereupon we said: It is the twenty-ninth (day) today. Thereupon he said: So far as the month is concerned, (and he, with a view to explaining it) flapped his hands thrice, but held back one finger at the last turn.

Source materials are from the University of Southern California MSA site
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