مُوَطَّأُ مَالِكٍ
Muwatta Malik 822
Hajj
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ أَبِي الزُّبَيْرِ الْمَكِّيِّ، أَنَّهُ قَالَ رَأَيْتُ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ يَطُوفُ بَعْدَ صَلاَةِ الْعَصْرِ ثُمَّ يَدْخُلُ حُجْرَتَهُ فَلاَ أَدْرِي مَا يَصْنَعُ .
Yahya related to me from Malik that Abu'z Zubayr al-Makki said, "I saw Abdullah ibn Abbas doing tawaf after asr. Then he went into his room and I do not know what he did."
Arabic/English book reference: Book 20, Hadith 119