حَدَّثَنَا عَفَّانُ حَدَّثَنَا وُهَيْبٌ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ طَاوُسٍ عَنْ عِكْرِمَةَ بْنِ خَالِدٍ عَنِ ابْنِ عَبَّاسٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَامَ مِنْ اللَّيْلِ يُصَلِّي فَقُمْتُ فَتَوَضَّأْتُ فَقُمْتُ عَنْ يَسَارِهِ فَجَذَبَنِي فَجَرَّنِي فَأَقَامَنِي عَنْ يَمِينِهِ فَصَلَّى ثَلَاثَ عَشْرَةَ رَكْعَةً قِيَامُهُ فِيهِنَّ سَوَاءٌ
مسند امام احمد بن حنبل · Hadith 2276
It was narrated from Ibn 'Abbas (RA) that the Prophet (PBUH) got up at night to pray. So I [Ibn 'Abbas] got up and did wudoo', then I stood on his left, but he pulled me and made me stand on his right. He prayed thirteen rak'ahs in which the length of standing was equal.
Sanad
حَدَّثَنَا عَفَّانُ حَدَّثَنَا وُهَيْبٌ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ طَاوُسٍ عَنْ عِكْرِمَةَ بْنِ خَالِدٍ عَنِ ابْنِ عَبَّاسٍ