His freedwoman reported that she heard the Messenger of Allah ﷺ say, "Do not kill your children secretly. By the One in whose hand my soul rests, ghayl indeed overtakes the horseman on the back of his horse and throws him to the ground."
حدثنا هشام بن عمار حدثنا يحيى بن حمزة عن عمرو بن مهاجر أنه سمع أباه المهاجر بن أبي مسلم يحدث
وكانت مولاته أنها سمعت رسول الله ﷺ يقول لا تقتلوا أولادكم سرا فوالذي نفسي بيده إن الغيل ليدرك الفارس على ظهر فرسه حتى يصرعه
Takhrij, its chain of transmission is daif. Abu Dawud narrated it in the Book of Medicine, chapter on ghayl, hadith no. 3881, from the hadith of Muhajir through this route, and Ibn Hibban graded it sahih. Muhajir al-Ansari was deemed reliable by Ibn Hibban alone, as far as I know.