Abu Dawud said: This is sounder that the tradition which transmitted by al-Zuhri from Anas, and al-Zuhri from Salim, from his father (Ibn 'Umar).
In-book : Book 32, Hadith 32
English translation : Book 31, Hadith 3989
32. 'Dialects and Readings of the Qur''an (Kitab Al-Huruf Wa Al-Qira''at)'
باب التَّخَلِّي عِنْدَ قَضَاءِ الْحَاجَةِ