Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) narrates: Whenever the Prophet (peace and blessings be upon him) saw a man whose physical form had some defect, he would go into prostration; whenever he saw a monkey, he would go into prostration; and when he woke from sleep, he would prostrate before Allah Almighty.
Al-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains a narrator, Yusuf bin Muhammad bin al-Munkadir, whom Abu Zur'ah declared thiqah (trustworthy), while a group declared him da'if (weak).