If anyone asks you provide proof of the validity of saying Ya RasoolAllah [Salal Laho Allehi Wasllam] provide them this reference.
The Hadith narrated on the authority of Sayidnah Usman bin Hanif (Radi Allah Anho) that a blind Sahabi was taught a special Du’a by Sayidnah RasoolAllah (Salal laho Allehi Wasllam), which he was to recite after every Salah.
The Du’a is as follows :
“O Allah Almighty, I ask from You, and turn towards You through the Wasilah (Medium) of Your Nabi Muhammad (Salal Laho Allehi Wasllam), who is indeed a Prophet of Mercy. O Muhammad ( Salal Laho Allehi Wasllam), with your Wasilah (Medium) I turn towards Allah Almighty for my need so that it may be bestowed. O Allah Almighty , accept the Prophet’s intercession for me.”
The Hadith above has been narrated upon the authority of the following Scholars and Masters of Hadith
Imam Bukhari (Radi Allah Anho),
Imam Muslim (Radi Allah Anho),
Imam Ibn-e-Maja (Radi Allah Anho),
Imam Tirmidi (Radi Allah Anho),
Imam Bahiqi (Radi Allah Anho),
Imam Ibn-e-Hazeema (Radi Allah Anho),
Imam Abul-Qasim Tabrani (Radi Allah Anho),
Imam Manzari (Radi Allah Anho),
Imam Hakim (Radi Allah Anho),
Imam Nisae (Radi Allah Anho),
JazakAllah…very important topic!
(Here is the narration of an amazing incident)
Shaykh Imaan ibn Jawzii, RahimahuAllah , in his book, “Oyunil Hikaayat”, narrates a strange and amazing incident of three brothers who were constantly engaged in Jihad (Holy Islamic War). He narrates: Once, while engaged in Jihad with the Christians of Rome, they were captured and tortured. The King informed them that if they adopted the religion of Christianity he would set them free. The brothers refused to do so. Instead they all proclaimed aloud, “Ya Muhammada (SalAllahu Alaihe Wasallam).” The King became furious and ordered two of the brothers to be thrown into boiling oil. After a while, the youngest escaped from the clutches of his capturers accompanied by the daughter of the King, who was amazed at the piety of the young Muslim. Six months later when they were about to be married, the two martyred brothers amazingly appeared accompanied by a group of Angels. When it was inquired as to how they had survived they replied: “When you saw us being thrown into the boiling oil, you indeed saw the truth, yet as we entered the pot, we entered into the high stages of Jannah.”
SubhanAllah!
Shaykh Imam ibn Jawzi, Rahimahu Allah states that the brothers lived in Syria and were extremely famous. Many couplets have been written in their praise.