Proclaiming Ya Rasoolallah

• Does Islam allows to proclaiming Ya Rasoolallah.?
• What is the actual meanings of this Term?
• Can we call it for help or use it as a Slogan?
• Who started it first time and what is the history?
• Is there any benefits to calling Ya Rasoolallh?
• Why people prevent or forbid to proclaiming it?
• what are its evidences or proofs in Islam?

For srearching the answers of above questions with complete references from Quran and Sunnahplease visit the website link below:

http://www.noorenabi.net/proclaiming-ya-rasoolallah-in-personal-invocation-or-as-slogan-in-an-assembly.php

 "Ya Rasoolallah" is written ion the "Door of Masjid e Nabavi" (Baab-e-Baqee) in the duration if "Usmain Khilapah". It can see also in present.