The tradition mentioned above has also been transmitted by Qatadah through a different chain of narrators. This version has "nine years". Abu Dawud said:

The other narrators mentioned "nine years" from Hisham except Mu'adh.

حَدَّثَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا عَبْدُ الصَّمَدِ، عَنْ هَمَّامٍ، عَنْ قَتَادَةَ، بِهَذَا الْحَدِيثِ وَقَالَ ‏"‏ تِسْعَ سِنِينَ ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ وَقَالَ غَيْرُ مُعَاذٍ عَنْ هِشَامٍ ‏"‏ تِسْعَ سِنِينَ ‏"‏ ‏.‏