Is it permissible, when talking about the Prophet (peace be upon him), to say "Sayyiduna" (our master) Muhammad in other than the narrations that were authentically reported as Al-Salat-ul-Ibrahimiyyah (the second part of the Tashahhud) or
Asking Allah to confer peace and blessings upon the Prophet (peace be upon him) as was mentioned in the second part of Tashahhud (a recitation in the sitting position in the second or last unit of Prayer) was reported without mentioning the word "our Master". It was not said: "O Allah, confer peace and blessings upon our Master Muhammad..." One should also not say the word "our Master" in Adhan (call to prayer) or Iqamah (call to start prayer). This was not mentioned in authentic Hadiths reported from the Prophet (peace be upon him) when he taught his Companions the way of asking Allah to confer peace and blessings upon him or the manner of announcing Adhan or Iqamah. Moreover, acts of worship are Tawqifiy (bound by a religious text and not amenable to personal opinion). Therefore, one should not increase or decrease anything in them that was not ordained by Allah (Glorified be He). Saying the word "our Master" for the Prophet (peace be upon him) in other than these things is permissible. The Prophet (peace be upon him) said:
I will be the pre-eminent amongst the descendants of Adam with no pride involved.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.