i have heard of the salaam being completed with 'wa maghfiratuh' the naration wereupon this would be based should be in the collection of Abu Dawood, but i couldn't find it
i come accross very few sisters/brothers who use this and it made me wondering if it is saheeh to greet with
'salaamu aleykum wa rahmatullaahi ta'aala wa barakaat wa maghfiratuh'
djazaq Allaahu gheyran
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Subhanaka 'allahumma wa bihamdika 'ash hadu 'alla 'ilaha 'illa 'anta ' astaghfiruka wa 'atubu 'ilayka