The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى الْقَيْسِيُّ، حَدَّثَنَا مُعْتَمِرٌ، عَنْ أَبِيهِ، بِهَذَا الإِسْنَادِ وَلَمْ يَذْكُرْ " إِذَا أَتَانِي يَمْشِي أَتَيْتُهُ هَرْوَلَةً " .This hadith has been narrated on the authority of Mu'tamar from his father with the same chain of transmitters, with a slight variation of wording
From Sahih Muslim, whose reports the scholars accept as authentic.