Hadith 42:39
Abu Qurra al-Khurasani said, "I saw Anas pass by us and he indicated to us with his hand that he was giving the greeting., The gesture made that clear. I saw al-Hasan using yellow dye while wearing a black turban. Asma' said, 'The Prophet, may Allah bless him and grant him peace, waved his hand to indicate the greeting to women."
حَدَّثَنَا بِشْرُ بْنُ الْحَكَمِ، قَالَ: حَدَّثَنَا هَيَّاجُ بْنُ بَسَّامٍ أَبُو قُرَّةَ الْخُرَاسَانِيُّ، رَأَيْتُهُ بِالْبَصْرَةِ، قَالَ: رَأَيْتُ أَنَسًا يَمُرُّ عَلَيْنَا فَيُومِئُ بِيَدِهِ إِلَيْنَا فَيُسَلِّمُ، وَكَانَ بِهِ وَضَحٌ، وَرَأَيْتُ الْحَسَنَ يَخْضُبُ بِالصُّفْرَةِ، وَعَلَيْهِ عِمَامَةٌ سَوْدَاءُ، وَقَالَتْ أَسْمَاءُ: أَلْوَى النَّبِيُّ صلى الله عليه وسلم بِيَدِهِ إِلَى النِّسَاءِ بِالسَّلامِ
Original Reference: Al-Adab Al-Mufrad 1002