What is the Arabic phrase which is used to pray for blessings on Prophet Muhammad (saw) in the same manner as blessings are prayed for Ibrahim and all the Prophets belonging to his progeny?
 Narrated Ibn Abi Hazim and Ad-Darawardi:                     Yazid said, "Kama sallaita ala Ibrahima wa barik 'ala Muhammad in wa all Muhammadin kama barakta 'ala Abrahima wa all Ibrahim."