(135) باب مَنْ رَأَى التَّخْفِيفَ فِيهَا
HIsham b . 'Urwah said that his father ('Umrah) used to recite the surahs as you recite like Wa'l-Adiyat(surah c).Abu Dawud said:
This indicates that those (traditions indicating long surahs) are abrogated, and this is more sound tradition.
Reference: Sunan Abi Dawud 813
In-book reference: Book 2, Hadith 423
English translation: Book 2, Hadith 812