Narrated Abu Bakra (RA):

Whenever the Prophet (ﷺ) received a matter which pleased him he used to prostrate to Allah [out of thankfulness]. [Reported by al-Khamsa except an-Nasa'i].

وَعَنْ أَبِي بَكْرَةَ ‏- رضى الله عنه ‏- أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-{ كَانَ إِذَا جَاءَهُ أَمْرٌ يَسُرُّهُ خَرَّ سَاجِداً لِلَّهِ } رَوَاهُ اَلْخَمْسَةُ إِلَّا النَّسَائِيَّ .‏ [1]‏