Whenever something pleasing came to the Prophet ﷺ, he would fall down in prostration.
أن النبي ﷺ كان إذا أتاه أمر يسر به خر ساجدا.
Narrated by Abu Dawud (2774), Tirmidhi (1578), and Ibn Majah (1394), all through the route of Abu Asim, from Bakkar bin Abdul-Aziz bin Abu Bakra, from his father, from his grandfather Abu Bakra, and he mentioned it.Bakkar bin Abdul-Aziz is disputed, but his hadith is hasan when he does not contradict others and does not bring anything objectionable. His hadith has a firm basis, and for this reason Ibn Adi said of him, "I hope there is no harm in him." See Kamil (2/475).