The Messenger of Allah ﷺ gave a single salutation, facing straight ahead.
حدثنا أبو مصعب المديني أحمد بن أبي بكر حدثنا
أن رسول الله ﷺ سلم تسليمة واحدة تلقاء وجهه
[Its chain of transmission is daif] Tabarani narrated it in Al-Kabir, 6/122, no. 5703, from the hadith of Abdul-Muhaymin, through him. See no. 164 for its defect.