Muwatta Malik, Book 3, Hadith 155 (In-Book)

Yahya related to me from Malik from his paternal uncle Abu Suhayl ibn Malik that his uncle's father said, "I recognise nothing nowadays of what I saw the people (i.e. the companions of the Messenger, may Allah bless him and grant him peace ) doing except the call to prayer."

وَحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَمِّهِ أَبِي سُهَيْلِ بْنِ مَالِكٍ، عَنْ أَبِيهِ، أَنَّهُ قَالَ مَا أَعْرِفُ شَيْئًا مِمَّا أَدْرَكْتُ عَلَيْهِ النَّاسَ إِلاَّ النِّدَاءَ بِالصَّلاَةِ ‏.‏

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also referenced under: Book 3, Hadith 9 (USC-MSA)