this chain is broken because you cannot start with Prophet (s.a.w.) suggested sahaba to take his(s.a.w) belongings as matter of tabburuk. since Prophet (s.a.w.) didn’t suggest for tabarruk so maybe those acts of love from sahaba was the reason
Prophet (s.a.w.) prayed to Allah(swt) as ‘dont make my grave to be a worshipping place’.
now can you start your chain from where Prophet (s.a.w.) suggested so?