Re: “Ya-Rasulullah”
Atashahhud (Attahiyaat-o-Lillah-e-Wasallawat…) was revealed during the journey of the Holy Prophet :saw: of Isra and Mairaj…
When the Holy Prophet :saw: entered the place where the meeting between Allah :swt: and the Holy Prophet :saw: was to take place, the Holy Prophet :saw: uttered, Attahiyat-o-Lillah-e-Wasallawat–o-Wattayabat- (Meaning Greetings Oh Allah, and prayers and all good things…) To which Allah :swt: replied, Asalam-o-Alaika Ya Ayuhan Nabiyyu, Warahmatullah-e-Wabarakatohu (Meaning Peace be upon you O Prophet and blessings and mercy of Allah be upon you…)
This case happened in Isra and Miraj and were the words of Allah :swt: when the Holy Prophet (saw) was alive…He is not alive now and hence we cannot use the word ‘Ya’…