And Abū Usāmah said: Hishām narrated to us, he said: Fātimah bint al-Mundhir informed me, from Asmā', may Allāh be pleased with her, she narrated:
then the Messenger of Allāh ﷺ turned from the prayer, and at that time the sun had become uncovered. Then he gave a khutbah and praised Allāh in a manner befitting His majesty, then said: "Ammā ba'd" (that is, after the praise and extolling).
وَقَالَ أَبُو أُسَامَةَ، حَدَّثَنَا هِشَامٌ، قَالَ: أَخْبَرَتْنِي فَاطِمَةُ بِنْتُ المُنْذِرِ، عَنْ أَسْمَاءَ، قَالَتْ: فَانْصَرَفَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ وَقَدْ تَجَلَّتِ الشَّمْسُ، فَخَطَبَ فَحَمِدَ اللَّهَ بِمَا هُوَ أَهْلُهُ ثُمَّ قَالَ: «أَمَّا بَعْدُ»
Reference: Sahih Al Bukhari 1061