I'm looking for a reference from which the definition of Amal-e-Kathir (Amal-e-Kaseer) for salaat has been derived/debated in Fiqah.
As far as online searches go, I have come across a site which mentions
Raddul Muhtar p.385 v.2 &
Taqrir Abu Dawud p.331 v.2 but I cannot find any place online where I can read the actual contents of the referenced texts.
I am looking for the mentioned texts online or preferably some direct reference to Qur'an/Hadith/Fiqah from where amal-e-kathir is defined. I will highly appreciate if the provided references could be consulted online or in other soft forms.