Actually saying peace on Prophet Abraham (sws) and His progeny covers it all but the reason I think that Prophet Muhammad (sws) and His Progeny are mentioned separately has some literary and historical significance.
Prophet Abraham (sws) hold a special status of Imamat while Prophet Muhammad (sws) hold the special status of culminating the Abrahamic tradition to its final form till the day of judgement. Therefore, mentioning of both the start and the end separately covers the whole of the second phase of prophethood beautifully.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.