Umar and sex slaves hadiths

Can someone please clear up and explain these 3 hadiths about Umar and Ibn Umar. These hadiths make me see them in a different light. Also is doing these actions permissible in Islam? Ibn Umar seemed like he raped the girl in front of everyone. Imam al-Beyhaqi records in ‘Al-Sunnan al-Kubra’ Volume 2 page 227: عن جده أنس بن مالك قال كن إماء عمر رضي الله عنه يخدمننا كاشفات عن شعورهن تضطرب ثديهن قال الشيخ والآثار عن عمر بن الخطاب رضي الله عنه في ذلك صحيحة Anas bin Malik said: ‘The slave-girls of Umar were serving us with uncovered hair and their breasts shaking” عن نافع ، عن ابن عمر ” أنه كان إذا اشترى جارية كشف عن ساقها ووضع يده بين ثدييها و على عجزها Nafe’e narrated that whenever Ibn Umar wanted to buy a slave-girl, he would inspect her by analysing her legs and placing his hands between her breasts and on her buttocks” Sunnan Al-Kubra, Volume 5 page 329 Mujahid said: ‘I was walking with ibn Umar in a slave market, then we saw some slave dealers gathered around one slave-girl and they were kissing her, when they saw ibn Umar, they stopped and said: ‘Ibn Umar has arrived’. Then ibn Umar came closer to the slave-girl, he touched some parts of her body and then said: ‘Who is the master of this slave-girl, she is just a commodity!’ Musanaf ibn Abi Shayba, Volume 4 page 289 Tradition 20240.