Muwatta Malik · Hadith 819

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

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).