Mishkat al-Masabih 3900
‘Abdallah b. Ja'far said:
When God’s Messenger arrived after a journey he was met by the children of his household. Once when he arrived after a journey I was the first to meet him and he lifted me in front of him. Then one of Fatima’s two sons was brought along and he set him behind him, and we were brought into Medina, three on one beast. 

Muslim transmitted it.
وَعَن عبدِ اللَّهِ بنِ جعفرٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا قَدِمَ مَنْ سَفَرٍ تُلُقِّيَ بِصِبْيَانِ أَهْلِ بَيْتِهِ وَإِنَّهُ قَدِمَ مَنْ سَفَرٍ فَسُبِقَ بِي إِلَيْهِ فَحَمَلَنِي بَيْنَ يَدَيْهِ ثُمَّ جِيءَ بِأَحَدِ ابْنَيْ فَاطِمَةَ فَأَرْدَفَهُ خَلْفَهُ قَالَ: فَأُدْخِلْنَا المدينةَ ثلاثةَ على دَابَّة. رَوَاهُ مُسلم