What is the ruling on a Muslim asking his Muslim brother who is going for Hajj or traveling to supplicate for him, following the example of what was narrated regarding the virtue of Uways Al-Qarani, and did Ibn Taymiyyah dislike that?

"Requesting prayers from someone whose supplication is hoped to be answered is permissible in principle, unless it involves a prohibition such as the requester relying on someone other than Allah, or exaggerating the status of the person being asked. While permissible, it is better to avoid it because it was not the custom of the Companions to mutually enjoin each other to supplicate. Furthermore, the narration transmitted from the Prophet, peace be upon him, to Umar regarding this matter is weak. As for the Companions' request for the Prophet, peace be upon him, to supplicate, no one can attain the Prophet's status. And the Prophet's request for the Companions to seek supplication from Uwais Al-Qarani is specific to him. In summary: There is no harm in requesting prayers from someone whose supplication is hoped to be answered, provided it is free from prohibitions, but refraining from it is more preferable and better."