Raba'i bin Harash bin Jahsh ربعي بن حراش · Chapters on Seeking Permission

"I was walking with Thabit Al-Bunani. He passed by some boys, so he said Salam to them. Then Thabit said: 'I was with Anas when he passed by some boys and gave the Salam to them, and Anas said: I was with the Prophet (ﷺ) when he passed by some boys and he gave the Salam to them.'"

that the Messenger of Allah (ﷺ) passed through the Masjid one day, and a group of women were sitting, so he motioned his hand with the Salam - 'Abdul-Hamid (one of the narrators) gestured with his hand.