Dua #1107•Abu Dawud, Ibn Majah, At-Tirmidhi. See also Al-Albani, Sahih Ibn Majah 1/233, and 'Irwa'ul-Ghalil 2/226.

Upon receiving pleasant news

Hisnul Muslim
#1107

كَانَ النَّبيُّ صلى الله عليه وسلم إِذَا أَتَاهُ أَمْرٌ يَسُرُّهُ أَوْ يُسَرُّ بِهِ خَرَّ سَاجِداً شُكْراً لِلَّهِ تَبَارَكَ وَتَعَالَى

Translation

It was narrated from Abu Bakrah that when the Prophet (ﷺ) heard news that made him happy, or for which one should be happy, he would fall down prostrate in gratitude to Allah, the Blessed and Exalted