Yahya related to me from Malik from Hisham ibn Urwa from his father that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, said, "The actions which the Messenger of Allah, may Allah bless him and grant him peace, loved most were those which were done most constantly."
Muwatta Malik Book 9, Hadith 99
← Previous Hadith Yahya related to me from Malik that Yahya ibn Said said, "I have heard that the first of the actions of a slave to be considered on the day of rising is the prayer. If it is accepted from him, the rest of his actions will be considered, and if it is not accepted from him, none of his actions will be considered."

Muwatta Malik Book 9, Hadith 98 Next Hadith → Yahya related to me from Malik that he had heard from Amir ibn Sad ibn Abi Waqqas that his father said, "There were two brothers, one of whom died forty nights before the other. The merit of the first was being mentioned in the presence of the Messenger of Allah, may Allah bless him and grant him peace, and he said, 'Wasn't the other one a muslim?' They said, 'Of course, Messenger of Allah, and there was no harm in him.' The Messenger of Allah, may Allah bless him and grant him peace, said, 'What will make you realise what his prayer has brought him. The prayer is like a deep river of sweet water running by your door into which you plunge five times a day. How much of your dirtiness do you think that will leave? You do not realise what his prayer has brought him.' "

Muwatta Malik Book 9, Hadith 100