What is the authenticity of the hadith that states, among the manners of greeting, that one approaching from the direction of the sun should greet the person facing them, and is it found in the Sahihayn?

Prophetic hadiths have clarified the etiquette of greeting with peace (Salam). It is Sunnah for the rider to greet the walker, the walker to greet the sitter, the young to greet the old, and the few to greet the many. Whoever meets another and initiates the greeting is better. As for the statement that one approaching from the direction of the sun should greet the one he meets, it has no basis, and adding to the Sharia is a deficiency.