The Book of Prayers (Kitab Al-Salat)
Muslim :: Book 4 : Hadith 1713
'A'isha reported Allah's Messenger (may peace be upon him) as saying: The acts most pleasing to Allah are those which are done continuously, even if they are small. and when 'A'isha did any act she did it continuously.
Source materials are from the University of Southern California MSA site|
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