Abu al-Aaliyah said that he sat on the chair of state with Ibn Abbas (ra). In another version, Abu Jamrah stated, "I used to sit with Ibn Abbas (ra) and he made me sit on his chair of state. Once, he asked me to stay behind with him so that he may aportion a share for me in his property. So, I stayed with him for two months".
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا يَحْيَى، قَالَ: حَدَّثَنَا وَكِيعٌ، قَالَ: حَدَّثَنَا خَالِدُ بْنُ دِينَارٍ، عَنْ أَبِي الْعَالِيَةِ قَالَ: جَلَسْتُ مَعَ ابْنِ عَبَّاسٍ عَلَى سَرِيرٍ.- حَدَّثَنَا عَلِيُّ بْنُ الْجَعْدِ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي جَمْرَةَ قَالَ: كُنْتُ أَقْعُدُ مَعَ ابْنِ عَبَّاسٍ، فَكَانَ يُقْعِدُنِي عَلَى سَرِيرِهِ، فَقَالَ لِي: أَقِمْ عِنْدِي حَتَّى أَجْعَلَ لَكَ سَهْمًا مِنْ مَالِي، فَأَقَمْتُ عِنْدَهُ شَهْرَيْنِ
sunnah.com