What is the grading of this report about Ibn Umar kissing a slave?

“Narrated Ayoub bin Abdullah al-Lukhmi that ibn Umar said: ‘On the day of the Jalola battle I won a slave girl, her neck was like a silver ewe.’ Then ibn Umar added: ‘I couldn’t control myself, I immediately jumped on her and began kissing her, while the people were looking at me”