The Salat was made compulsory on all the holy messengers of Allah right from the Holy Prophet Hadrath Adam (A.) to till date. However the number & mode was different. & now in Islamic shariat the procedure prescribed is most perfect.
O Allah bless him and his family as many times as those who have asked for blessings upon him as many times as those who have not and as many times as those who will ask until the Day of Resurrection every day a thousand times.