The Prophet said: "The rider is to be behind the funeral (procession), and the walker where he wishes, and the child should be prayed over."  

أَنَّ النَّبِيَّ ﷺ قَالَ الرَّاكِبُ خَلْفَ الْجَنَازَةِ وَالْمَاشِي حَيْثُ شَاءَ مِنْهَا وَالطِّفْلُ يُصَلَّى عَلَيْهِ