Why is Abraham (as) mentioned in the prayer of blessings for the Holy Prophet Muhammad (saw)?
Abraham (as) is the father of many prophets, linked to the House of God for all mankind, and his prayer for a Messenger was fulfilled in the Holy Prophet Muhammad (saw). No other bond between two prophets is so close.
Whoever praises someone honestly and often slowly becomes more like them. The prayer of blessings reminds a Muslim every day of their highest example. If the praise is sincere, the conscience soon asks why one is not following that example. In this way the prayer becomes a quiet push to grow better. It is also gratitude. No one can repay what the Holy Prophet Muhammad (saw) gave to mankind. One can only ask God to reward him.
Why Abraham (as) in particular? He is known as the father of the prophets, since a long line of messengers came from his family. His name is also tied to the rebuilding of the Kaaba, which the Holy Qur’an describes as a house for all mankind, not for one particular religion. With him began an age that was moving towards a Messenger for all people.
The second and third verses above show the closest bond. Abraham (as) prayed for a Messenger who would recite God’s signs, teach the Book and wisdom, and purify the people. God granted this prayer almost word for word, but changed the order. Purification now comes before teaching. This Messenger purifies people simply through closeness to him, and only a purified heart can fully take in the deep wisdom of the Book. So God gave more than was asked.
The greatest grace Abraham (as) received was exactly this, that the Holy Prophet Muhammad (saw) came from among his descendants. When Muslims ask for the same blessing in their prayer, they ask for a grace that is not tied to one time. It is meant to continue in every generation.