Invoking blessings on the Prophet (peace & blessings be upon him)

the above transliteration is :-

Allahumma salli ' wa sallim was baarik ala Sayyidina Muhammadil
nil-fatihi lima Ughliqa wal khatimi lima sabaqa wan-naa-siril-haqqi
bil-haqqi wal-hadi ila Sirati-kal-mustaqima sal-lal-lahu 'alayhi
wa 'ala alihi wa-ashaabihi haqqa qadrihi wa-miq-da rihil-'azim.

the above translation is:-

O God bless our Master Muhammad (pbuh) who opened what had been closed, and who is the Seal of what had gone before, he who makes the Truth Victorious by the Truth, the guide to thy straight path, and bless his household as is the due of his immense position and grandeur.

I am sure you have heard the fact that there is no such thing as invoking too much salawat on the Prophet and that we should stay clear of anyone who makes such a claim. We will only mention here some evidence on this topic by way of a reminder.

Abu Hurayra reported that the Prophet said: "If people sit in an gathering in which they do not remember Allah nor invoke a blessing on the Prophet, it will be a cause of grief for them on the Day of Judgment." (Narrated by Tirmidhi, who graded it hasan.)

The author of Fath al-`allam said: "This hadith proves that it is incumbent on one to remember Allah and invoke blessings on the Prophet while sitting in an gathering, for whether we take the words "cause of grief" to mean torment of fire or any other punishment, obviously a punishment is incurred only when an obligatory act is neglected or a forbidden act is committed, and here it is both the remembrance of Allah and the invoking of blessings on His Prophet that are apparently incumbent."