The Most Excellent Blessings
The most preferred blessings (Durood) are those which Allah's Beloved sallallahu alayhi wasallam taught when asked by his companions radhiyallahu anhum.
"Khaleel-ullah" and "Habeeb-ullah"
Allah declared Hadhrat Ibraaheem alayhis salaam as His friend -- and the Holy Prophet sallallahu alayhi wasallam as His beloved. Allah's blessings on them are therefore based on special love. It is a fact that all matters founded on love are sublime and ecstatic.
The relationship between friendship ("Khaleel-ullah") and love ("Habeeb-ullah") is obvious, therefore blessings on the Holy Prophet sallallahu alayhi wasallam are compared to the blessings on Hadhrat Ibraaheem alayhis salaam.
The wordings of the blessings have slight variations and have reached us through authentic Ahaadeeth.
Seeking Allah's blessings for the Holy Prophet sallallahu alayhi wasallam is decreed by the Almighty. Hence the multiplication of rewards is expected through the recitation of blessings.
The righteous Ulamaa have commented that 'Allaahumma' stands for all the Beautiful Names of Allah. Likewise, 'Hameed-um-Majeed' connotes all His Attributes of Grace and Majesty. The readers are advised to remember these meanings while reciting Salaat-e-Ibraaheemi for greater benefit and joy.
Warning for Negligence in Sending Salaat and Salaam