'Amr reported: I said to 'Urwa: How long did Allah's Apostle ﷺ stay in Mecca? He said: For ten years. I said: Ibn Abbas says it is some years above ten. He ('Urwa) sought forgiveness for him and said: His statement is based on the verse of a poet.

وَحَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، قَالَ قُلْتُ لِعُرْوَةَ كَمْ لَبِثَ النَّبِيُّ
ﷺ بِمَكَّةَ قَالَ عَشْرًا . قُلْتُ فَإِنَّ ابْنَ عَبَّاسٍ يَقُولُ بِضْعَ عَشْرَةَ . قَالَ
فَغَفَّرَهُ وَقَالَ إِنَّمَا أَخَذَهُ مِنْ قَوْلِ الشَّاعِرِ .