The Book of Heart-Melting Traditions
وَحَدَّثَنَاهُ إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا الثَّقَفِيُّ، أَخْبَرَنَا أَيُّوبُ، بِهَذَا الإِسْنَادِ .This hadith has been narrated on the authority of Ibn 'Abbas through another chain of transmitters
From Sahih Muslim, whose reports the scholars accept as authentic.