I begin with the Name of Allaah, the Most Merciful, the One Who Bestows His Mercy
All praises are due to Allaah, and may the Salaah and Salaam of Allaah be upon His messenger. To proceed:
I sometimes see brothers doing this, and I thought it was nice to find this narration supporting it as a practice of the Companions. In al-Bukhari’s ‘al-Adab al-Mufrad’ (1012), it’s reported from Thabit al-Bunani that he said:
“When Anas would wake up, he would rub sweetly scented oil on his hands for when he would shake hands with his brothers.”
This was authenticated by al-Albani in ‘Sahih al-Adab al-Mufrad’ (774).
Husayn al-’Awayshah commented: “This shows how eager they were to make their brothers happy and pleasant.”