Narrated Abu Bakrah: When anything came to the Prophet ﷺ which caused pleasure (or, by which he was made glad), he prostrated himself in gratitude to Allah.
Hadith Referenceسنن ابي داود / كتاب الجهاد / 2774
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده حسن, مشكوة المصابيح (1494), أخرجه الترمذي (1578 وسنده حسن) وابن ماجه (1394 وسنده حسن)