On the authority of Ibn ʿUmar: that the Prophet, peace and blessings be upon him, prayed toward his camel — or his riding beast — and he used to pray on his riding beast wherever it turned with him. (1)

This is a good and authentic hadith.

This is the view of some of the people of knowledge: they see no harm in praying toward a camel, using it as a screen. (2)

‌‌147 - Chapter: What has been reported regarding when the evening meal is served and the prayer is established, then begin with the evening meal

353 - Qutaybah narrated to us, he said: Sufyan ibn ʿUyaynah narrated to us, from al-Zuhrī, from Anas, reporting it to the Prophet, peace and blessings be upon him, who said: "When the evening meal is served and the prayer is established, then begin with the evening meal." (3)

In this chapter, there is also [a hadith] from ʿAʾishah, Ibn ʿUmar, Salamah ibn al-Akwaʿ, and Umm Salamah.

The hadith of Anas is a good and authentic hadith.

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(1) Authentic. Recorded by al-Bukhārī (430) and (507), Muslim (502), Abū Dāwūd (692), and it is in the Musnad of Aḥmad (4468).
(2) Thus the author reported it from some of the people of knowledge. Ibn ʿAbd al-Barr said in al-Istidhkār 6/182: As for using the riding beast as a screen, I know of no disagreement concerning it.
(3) Authentic. Recorded by al-Bukhārī (671) and (672) and (5463), Muslim (557), Ibn Mājah (933), al-Nasāʾī 2/111, and it is in the Musnad of Aḥmad (11971) and (12076), and in Ṣaḥīḥ Ibn Ḥibbān (2066).